Elementary Vocabulary
36,007 words and 29 expressions at the elementary level.
The third letter of the English alphabet, called cee and written in the Latin script.
Filter-avoidance spelling of cis (“cisgender”).
Confederate dollar
Initialism of Caught and bowled.
Initialism of command and control.
Abbreviation of cease-and-desist.
plural of C&D
Initialism of commercial and industrial (lending, waste, etc.).
Initialism of culture and sensitivity (urine tests).
Initialism of country and western.
Pronunciation spelling of can, the modal verb.
plural of c
Abbreviation of Commonwealth.
Contraction of can + we.
Censored spelling of cunt.
Censored spelling of cock.
Censored spelling of cunt.
Filter-avoidance spelling of cut (“to engage in self-harm by making cuts in one's own skin”).
An academic grade issued by certain institutions. Slightly better than a C and slightly worse than a B−.
A multiparadigm high-level compiled programming language that is a more advanced derivative of C.
Chinese; used to form nouns relating to the (popular) culture of China.
A C-like programming language, designed to be generated mainly by compilers for high-level languages rather than written by human programmers.
A class of canoe for a single kneeling person.
Ellipsis of Boeing C-17 Globemaster III, a military transport aircraft.
Abbreviation of COVID-19.
A class of canoe for two kneeling people.
A standard wooden clothespin with a metal spring, used to hold gels to the barn doors of cinema lights.
Abbreviation of circa.
Alternative form of CA (“chartered accountant”).
Abbreviation of Chief Baron.
complex conjugate of the previous term
Central District, used in case citations to identify courts, particularly United States Federal courts designated to cover the central part of a multi-district state.
Alternative form of CE.
Abbreviation of cantus firmus.
Initialism of center of gravity.
Abbreviation of chief judge.
Initialism of confidence level.
Abbreviation of ceteris paribus.
Initialism of Canal Zone, as used in case citations.
Alternative form of c/o; care of
Initialism of credit note.
plural of C/N
Abbreviation of care of, used to identify an intermediary who is responsible for transferring a piece of mail between the postal system and the final addressee.
Abbreviation of comes with,coupled with,combined with; commonly used with 45 RPM singles, referring to the flip side (B-side) of the record.
Leetspeak spelling of cool.
the 1100s or twelfth century.
the 1200s or thirteenth century.
the 1300s or 14th century.
Abbreviation of canonicalization.
the 1400s or 15th century; the quattrocento
the 1500s or 16th century.
the 1600s or 17th century.
the 1700s or 18th century.
The nineteenth century; the 1800s.
Initialism of command and control
Credits to all.
Abbreviation of customer-to-customer.
Initialism of command, control, and communications.
Initialism of command, control, and communications countermeasures.
Abbreviation of cyanidin-3-glucoside, a.k.a. chrysanthemin.
Initialism of command, control, communications and intelligence.
Initialism of Commercial Crew and Cargo Program Office.
Initialism of Copernicus Climate Change Service.
Abbreviation of Channel 4 (“the British television channel”).
plural of c4
Abbreviation of Channel 5 (“the British television channel”).
The Commodore 64, a home computer of the 1980s.
plural of C64
A genre of British rock music most prominent in the late eighties and early nineties, with a lo-fi aesthetic, unconventional instrumentation and romantic lyrics.
plural of c@
Abbreviation of California: a state of the United States.
Abbreviation of circa.
Abbreviation of Canadian Arctic Archipelago.
Acronym of Clean Air Amendment Act of 1990.
Initialism of cyclic alkyl-amino carbene.
Initialism of Coalition of African American Pastors.
plural of CAA
A compartment at the front of a truck or train for the driver.
A cabas, or lady's bag.
To embezzle or purloin; to pilfer, to steal.
One who drives a taxi for a living.
A surname.
Initialism of Child and Adolescent Bipolar Foundation.
Initialism of coronary artery bypass grafting.
To place in a cabin or other small space.
A storage closet either separate from, or built into, a wall.
The driver of a hackney cab.
Abbreviation of Cabo San Lucas: a resort city in Baja California Sur, Mexico.
plural of cab
Initialism of Catholic Apostolic Church.
goddess of the hearth.
Obsolete spelling of case.
obsolete spelling of cake (any sense)
The cry of a hen or goose, especially when laying an egg.
plural of cac
Any member of the family Cactaceae, a family of flowering New World succulent plants suited to a hot, semi-desert climate.
Acronym of computer-aided design.
Abbreviation of cadmium.
A surname.
Initialism of computer-aided design and drafting.
An English metonymic surname originating as an occupation for a cooper.
Alternative form of qadi.
Abbreviation of commodore admiral.
Car of the cdr in Lisp. The second element in a list.
plural of cad
Obsolete spelling of caddie.
Acronym of Certificate in Advanced English, the second highest level ESOL exam awarded by Cambridge University.
A male given name.
A city in Calvados department, Normandy, France.
A Welsh fortress.
Initialism of compressed air energy storage.
Initialism of Canadian Armed Forces.
Alternative form of café.
A restaurant in which customers select their food at a counter then carry it on a tray to a table to eat.
Initialism of concentrated animal feeding operation.
plural of caf
A coffee shop; an establishment selling coffee and sometimes other non-alcoholic beverages, simple meals or snacks, with a facility to consume them on the premises.
Initialism of commander of the air group.
Initialism of computer aided geometric design.
A surname from French.
A shapeshifting trickster god of the ǀXam people of southern Africa.
Acronym of compound annual growth rate.
plural of cag
Alternative form of cagey.
Pronunciation spelling of car.
A surname.
plural of cah
A surname from Chinese.
Abbreviation of Caithness.
Acronym of Columbia Accident Investigation Board, a panel that investigated the 2003 LOVC of the Space Shuttle Columbia.
A local governor or leader, especially in North Africa or Moorish Spain; an alcaide.
To throw, pelt; to throw weakly.
The son of Adam and Eve who killed his brother Abel.
Acronym of Clean Air Interstate Rule.
Initialism of complete androgen insensitivity syndrome.
A diminutive of the female given names Caitlin or Caitlyn.
A fish, the schoolmaster snapper (Lutjanus apodus).
Alternative form of cazh.
A type of string instrument from Indonesia.
plural of cak
Resembling cake in texture.
wolfram, an ore of tungsten.
Abbreviation of California: a state of the United States, as used in case citations.
A surname.
Synonym of smithsonite, a pink form of zinc oxide (mainly zinc carbonate ZnCO₃) formed as a byproduct of zinc sublimation, now used in skin lotions.
Abbreviation of calculus.
The act or process of calculating.
A mechanical or electronic device that performs mathematical calculations; (now usually) an electronic one specifically.
Initialism of culturally and linguistically diverse.
Any of a number of marine fish in the family Odacidae
Any system by which time is divided into days, weeks, months, and years.
The back of the leg below the knee.
A city in western Colombia, southwest of Bogotá.
The person who makes a telephone call.
The state of being calm; peacefulness; absence of worry, anger, fear or other strong negative emotion.
The state of being calm; tranquillity; silence.
A surname.
A dark shaly limestone occurring in the Carboniferous limestone of Ireland.
Initialism of computer-assisted legal research.
plural of cal
The substance which remains after a metal or mineral has been thoroughly burnt, once seen as being the essential substance left after the expulsion of phlogiston, but now recognised as being the metallic oxide (or, in some cases, the metal in a state of sublimation).
a mixed language or dialect spoken by the Spanish and Portuguese Romani.
A turning or sliding piece which imparts motion to a rod, lever or block brought into sliding or rolling contact with it.
A hybrid animal produced by breeding a camel and a llama.
Abbreviation of Cambridge.
A mammalian beast of burden, much used in desert areas, of the genus Camelus.
A device for taking still or moving pictures or photographs.
Initialism of Collaborative Application Markup Language.
A surname.
A pattern on clothing consisting of irregularly shaped patches that are either greenish/brownish, brownish/whitish, or bluish/whitish, as used by ground combat forces.
A disguise or covering up.
To live in a tent or similar temporary accommodation.
A person who camps, especially in a tent etc.
A fire at a campground or on a camping trip, often used for cooking, to provide light and heat, to drive away bugs, and as a focal point for sitting around in the evening and talking, telling stories, and singing.
An area where tents are pitched.
present participle and gerund of camp
A gathering or event at which people sleep outdoors or camp.
A place where one or more tents may be pitched for an overnight stay in an outdoor area.
plural of cam
Abbreviation of Canada.
The site where Jesus miraculously turned water into wine.
An artificial waterway or artificially improved river used for travel, shipping, or irrigation.
Of a light yellow colour.
A cancellation.
A disease in which the cells of a tissue undergo uncontrolled (and often rapid) proliferation.
Alternative form of kand.
A light source consisting of a wick embedded in a solid, flammable substance such as wax, tallow, or paraffin.
A device for holding one or more lit candles
The light emitted by a candle.
A unit of luminous intensity of a light source, equal to 0.981 candelas.
To catch on fire, so that the chute resembles a tapered candle with a flame on top.
The slender, flexible main stem of a plant such as bamboo, including many species in the grass family Gramineae.
Alternative form of cangue (“type of pillory”).
Of, or pertaining to, a dog or dogs.
To pack into a canister.
Gossip, chatter.
Obsolete spelling of can (“container”).
simple past and past participle of can
present participle and gerund of can (“to be able to”)
To bombard with cannons.
To jump or dive into water, performing a cannonball landing.
To ride or paddle a canoe.
A water sport involving travelling or racing in canoes or kayaks.
third-person singular simple present indicative of can
An argot, the jargon of a particular class or subgroup.
A type of coarse cloth, woven from hemp (traditionally) or from cotton and polyesters, useful for making sails, tents, and overcoats or as a surface for paintings.
Of or relating to cane (the plant) or canes.
A valley, especially a long, narrow, steep valley, cut in rock by a river.
Initialism of Central Applications Office, the official body tasked with handling applications for students' first year of college.
A wooden drinking-bowl with two handles.
Abbreviation of capitalized.
A Spanish cloak.
Initialism of cocamidopropylbetaine.
Initialism of continuous ambulatory peritoneal dialysis.
A piece or point of land, extending beyond the adjacent coast into a sea or lake; a promontory; a headland.
The amount that will fit into a cap.
Alternative spelling of kaph (letter of some Semitic alphabets).
plural of capo
Money and wealth: the means to acquire goods and services, especially in a non-barter system.
American and Oxford British English standard spelling of capitalisation.
In writing or editing, to write (something: either an entire word or text, or just the initial letter(s) thereof) in capital letters, in upper case.
Initialism of capital asset pricing model.
A surname.
plural of cap
Abbreviation of captain.
A chief or leader.
To add captions to a text or illustration.
An act of capturing; a seizing by force or stratagem.
A protein that caps the barbed (plus) end of actin filaments in muscle cells. It is located in the Z band of the muscle sarcomere.
A female given name originating as a coinage.
A smooth, chewy, sticky confection made by heating sugar and other ingredients until the sugars polymerize and become sticky.
Acronym of California Air Resources Board.
To check IDs, especially against a minimum age requirement.
A wood-based material resembling heavy paper, used in the manufacture of boxes, cartons and signs.
Of fundamental importance; crucial, pivotal.
Close attention; concern; responsibility.
Taking care; attentive to potential danger, error or harm; cautious.
A carer; a person who looks after another person.
Not concerned or worried (about).
Lack of care; the state or quality of being careless.
Synonym of kerf.
As much as a car will hold. (Usually with reference to an automobile; sometimes with reference to a railroad car, especially in 19th-century texts.)
To be filled with worry, solicitude, or troubles.
A rude, rustic man; a churl.
The contents of an automobile (passengers, supplies, etc.) for one trip.
Archaic form of cairn.
Any of a number of festivals held just before the beginning of Lent.
A diminutive of the female given name Caroline.
The state of carousing; (drunken) revelry; (countable) an instance of this; a noisy social gathering, often with much alcohol consumption.
A pleasure ride, typically found at amusement parks and fairs and accompanied by music, consisting of a slowly revolving circular platform on which are fixed various seats, frequently shaped like horses or other animals, cars, etc., which may also move up and down; a merry-go-round.
To lay carpet, or to have carpet installed, in an area.
present participle and gerund of carpet
Any marsh; marshy ground, swampland.
The act of conveying; carrying.
A person or object that carries someone or something else.
A manner of transporting or lifting something; the grip or position in which something is carried.
plural of car
Dizzy or feeling nauseated due to riding in a vehicle; suffering from motion sickness.
Acronym of Championship Auto Racing Teams, a defunct sanctioning body for open-wheel racing in motorsports in the United States of America. (Compare USAC, FIA.)
The amount that a cart can carry.
An inexpensive, disposable box-like container fashioned from either paper, paper with wax-covering (wax paper), or other lightweight material.
One who creates a cartoon or strip cartoon.
To perform the gymnastics feat of a cartwheel.
To cut.
Alternative spelling of car wash.
A surname, a less common spelling of Carey.
Initialism of channel-associated signalling.
Alternative spelling of casual.
Abbreviation of casualty.
A town in Arkansas.
Initialism of Canadian Aviation Safety Board, a predecessor to the TSB (“Transportation Safety Board”).
Acronym of community amateur sports club.
An actual event, situation, or fact.
A tree, Anacardium occidentale, native to northeastern Brazil, now widely grown in tropical climates for its cashew nuts and cashew apples.
To dismiss (someone, especially military personnel) from service.
A little box, e.g. for jewellery.
Acronym of cost per available seat-mile, a method of calculating operating costs in the travel industry, derived by dividing total operating expenses by total ASMs.
A surname.
A diminutive of the female given name Cassandra of medieval origin, later also used for Cassidy, and Catherine with its variant forms.
A dish of glass or earthenware, with a lid, in which food is baked and sometimes served.
A small flat case containing magnetic tape on two reels, used to record and play back audio and video material.
To throw.
To house or keep in a castle.
Alternative form of cata-.
Alternative spelling of catalogue.
A systematic list of books, names, pictures, etc.
Instantly appealing and memorable.
A delicacy or item of food.
A group, often named or numbered, to which items are assigned based on similarity or defined criteria.
The larva of a butterfly or moth; leafworm.
Any fish of the order Siluriformes, mainly found in fresh water, lacking scales, and having barbels like whiskers around the mouth.
A diminutive of the female given name Catherine.
Universal; all-encompassing.
Initialism of computer-assisted telephone interviewing.
Initialism of Contemporary Amperex Technology Company Limited, a large manufacturer of EV batteries and other equipment.
A brief, light sleep, usually during the daytime.
Any of the about 250 species of flowering plant of the genus Nepeta, family Lamiaceae, certain of which are said to have medicinal qualities.
Acronym of Cadet Administrative and Training Order.
plural of cat
Alternative form of ketchup.
A surname.
Domesticated animal of the species Bos taurus (cows, bulls, steers, oxen etc), and other hoofed mammals of the genus Bos.
A cattle rancher.
Initialism of cable television.
A less common spelling of Katie, diminutive of the female given name Catherine and related names.
Clipping of St Catz, referring to St Catharine's College, Cambridge.
A surname from French.
A chest with holes for keeping fish alive in water.
An opaque, earthy variety of barite, or heavy spar.
A style of close-fitting circular cap worn by women in the sixteenth century and later, often made of linen.
Brassica oleracea var. botrytis, an annual variety of cabbage, of which the cluster of young flower stalks and buds is eaten as a vegetable.
To whiten with camstone.
Cup.
The source of, or reason for, an event or action; that which produces or effects a result.
To emit the characteristic call of a panther.
Prudence when faced with, or when expecting to face, danger; care taken in order to avoid risk or harm.
Using or exercising caution; careful; tentative
An administrative district of São Tomé and Príncipe.
Clipping of cavalry
Abbreviation of Cavan.
To surrender.
A large cave.
plural of cavus
A hollow area within the body.
Abbreviation of cavaliers.
Acronym of ceiling and visibility unrestricted, indicating a ceiling of at least 10,000 feet and visibility of at least 10 miles: ideal flying conditions.
The harsh cry of a crow.
Alternative form of cauk.
A traditional Welsh soup, typically made with beef, lamb, or salted bacon with carrot, leeks, potatoes, swedes, and other seasonal vegetables.
Abbreviation of child abduction warning notice.
plural of caw
Abbreviation of central axis.
A surname from French.
A small island or ledge of rock in the water; a key.
plural of cay
Alternative form of cazh.
Alternative form of kaza.
Obsolete spelling of because.
Obsolete form of qadi.
Alternative spelling of caique.
Initialism of citizens' band.
Initialism of collective bargaining agreement.
Acronym of carbon border adjustment mechanism.
Acronym of City Buildings and Architecture Office
Abbreviation of centibar.
plural of CBA
Initialism of callable bull/bear contract, a type of exotic derivatives contract.
Initialism of computer bulletin board system.
Initialism of Canadian Broadcasting Corporation.
Initialism of Catholic Bishops' Conference of the Philippines.
plural of CBC
Initialism of cone beam computed tomography.
Initialism of case-based discussion.
Abbreviation of cannabidiolic acid.
Abbreviation of central bank digital currency.
plural of CBD
Initialism of cannabidivarin.
can't be everywhere
A user of CB radio.
Initialism of cerebral blood flow.
Initialism of Central Board of Film Certification.
plural of CBF
Abbreviation of cannabigerol.
Initialism of Confederation of British Industry.
Acronym of content-based image retrieval.
Abbreviation of Columbus Blue Jackets.
plural of CBJ
Initialism of Central Bank of Kenya.
Initialism of competency-based learning.
Initialism of ceramic building material.
Initialism of contra body movement position.
Initialism of chemical, biological, nuclear; alternative form of NBC.
Abbreviation of cannabinodiol.
Initialism of criminal behaviour order.
Initialism of concise binary object representation: a binary data serialization format loosely based on JSON.
plural of CBO
Initialism of continuous bag of words.
Initialism of Customs and Border Protection.
Initialism of contagious bovine pleuropneumonia.
Initialism of congenital bilateral perisylvian syndrome
Initialism of cosmic background radiation.
Initialism of chemical, biological, radiological, and nuclear, used to remember the four types of weapons of mass destruction.
Initialism of Columbia Broadcasting System: a U.S. television and radio network, now officially known as CBS Broadcasting.
Initialism of Canada Border Services Agency.
Initialism of component-based software engineering.
A U.S. Internet television news channel.
Initialism of cognitive behavioral therapy.
Initialism of cognitive behavioral therapy for psychosis.
plural of CBT
Initialism of California Baptist University.
Initialism of cannabivarin.
Initialism of chemical and biological warfare.
Abbreviation of caramboxin.
Initialism of carbon copy.
Alternative form of CCR.
simple past and past participle of cc
plural of cc
plural of C.
Abbreviation of Creative Commons Zero, a license for relinquishing copyright and release material into the public domain.
Abbreviation of Chandni Chowk to China (a 2009 Hindi film).
simple past and past participle of cc
Initialism of controller of certifying/certification authorities.
Abbreviation of circa.
Initialism of Companies' Creditors Arrangement Act (“the act controlling bankruptcy in Canada”).
plural of CCA
Initialism of carbon ceramic brake.
plural of CCB
Initialism of countercurrent chromatography.
Initialism of central centrifugal cicatricial alopecia.
Initialism of centrifugal countercurrent chromatography.
Initialism of Central Committee of the Communist Party.
Initialism of colony collapse disorder.
Initialism of Center for Countering Digital Hate.
Abbreviation of Central Commission for Discipline Inspection, the supervisory organ of the Chinese Communist Party in charge of upholding party discipline and corruption investigations.
Initialism of coat color dilution lethal
plural of CCD
Initialism of Collins COBUILD English Language Dictionary.
Initialism of Council for the Curriculum, Examinations & Assessment.
simple past and past participle of CC
Abbreviation of one hundred cubic feet.
Initialism of Coventry City Football Club.
Initialism of cold-cathode fluorescent lamp.
Initialism of collectible card game.
Initialism of Canadian Coast Guard Cutter. A designation for cutters operated by the Canadian Coast Guard.
Initialism of Canadian Coast Guard Ship. The designation for vessels operated by the Canadian Coast Guard (CCG).
Initialism of Crimean–Congo hemorrhagic fever.
Initialism of cold climate heat pump.
Initialism of co-channel interference.
Initialism of climate change impact assessment.
Initialism of certified commercial investment member, a designation used by realtors in the United States.
Initialism of Common Configuration Implementation Program.
Initialism of county court judgement.
plural of CCJ
Initialism of cholecystokinin.
Ellipsis of 21st CCLC; initialism of Century Community Learning Centers.
Initialism of countercountermeasure.
Initialism of Chinese Classification of Mental Disorders: a publication by the Chinese Society of Psychiatry (CSP) for the classification of mental disorders.
plural of CCM
Initialism of controlled-controlled not gate.
City College of New York
Initialism of chief compliance officer.
plural of CCO
Initialism of Chinese Communist Party.
Initialism of California Consumer Privacy Act.
plural of CCP
Initialism of Creedence Clearwater Revival (60s–70s American band).
Initialism of C-C chemokine receptor type 5, a coreceptor of CD4 receptor.
Initialism of continuing care retirement community.
plural of CCR
Initialism of Cybernetic Culture Research Unit.
Initialism of casualty clearing station.
The industry promulgated standard for DC fast charging, in North America, a combination of the Type 1 AC charging standard connector, additional DC conductor pins, and the CCS protocol.
The European Union legally defined standard for public DC fast charging, a combination of the Type 2 AC charging standard connector, additional DC conductor pins, and the CCS protocol.
Initialism of Calgary Catholic School District, Alberta, Canada.
Initialism of certified Cisco Systems instructor.
Initialism of combined continuity and spotting list.
Abbreviation of core collapse supernova.
plural of CCS
Initialism of compulsory competitive tendering.
Initialism of Closed-Circuit TeleVision; video surveillance.
Initialism of cardiac/coronary care unit.
plural of CCU
Initialism of clathrin-coated vesicle.
Initialism of combined certificate of value and origin.
plural of CCV
Initialism of Consumer Council for Water.
Initialism of Central California Women's Facility.
plural of CCW
Abbreviation of currency.
Initialism of compact disc.
Synonym of CD-RW (dated)
Abbreviation of Compact Disc-Interactive (a kind of digital optical disc).
Compact disc - recordable; a form of digital media that is based on the use of a laser to read from and write to a plastic disc. It can only be written to once, although the entire disc does not necessarily have to be written in one session.
a zinc-dependent metalloprotease, expressed in a wide variety of tissues, especially in kidney and on pre-B lymphocytes
The α (alpha) component of various integrins, especially ones in which the β (beta) component is CD18 (i.e. β2) and which mediate leukocyte adhesion.
a type II integral membrane protein on small intestinal and renal tubular epithelial cells, macrophages, granulocytes, and synaptic membranes from the CNS.
a carbohydrate adhesion molecule that can be expressed on glycoproteins, glycolipids and proteoglycans, mediating phagocytosis and chemotaxis; used as a marker in mostly hematologic malignancies
a protein forming membrane-bound complexes with CD11s, its lack causing leukocyte adhesion deficiency, and also occurring in a soluble form which plasma levels are inversely correlated with disease activity in spondyloarthritis.
protein found on the surface of most B-cells, associating with the B-cell receptor complex
a glycosylated phosphoprotein expressed on all stages of B cell development except the first and last
B-cell and FDC membrane protein involved in the complement system and B cell coreceptor complex, and bound by EBV.
a molecule found on the surface of mature B cells and to a lesser extent on some immature B cells, helping to prevent the overactivation of the immune system and the development of autoimmune diseases
a C-type lectin acting as receptor for IgE, found on mature B cells, activated macrophages, eosinophils, follicular dendritic cells, and platelets
an 80-mm (3-inch) CD (compact disc)
a cell membrane protein of the tumor necrosis factor receptor family, serving as a tumor marker and the target of brentuximab vedotin
a transmembrane receptor expressed on blood cells of myeloid lineage, though also found on some lymphoid cells
a protein that constitutes the Knops blood group system; it processes and clears complement opsonized immune complexes
glycoprotein found on the surface of many immune cells (white blood cells), including CD4+, CD8+, B lymphocytes and natural killer cells, functioning in cell adhesion, signal transduction and calcium signaling
plural of CD3
A glycoprotein found on the surface of helper T cells and several other types of immune cells.
A helper T cell.
a costimulatory protein found on antigen presenting cells and required for their activation by CD154 of T_H cells, with deficiency of CD40 possibly leading to hyper-IgM syndrome type 3.
a factor on platelets that helps bind von Willebrand factor, hence facilitating platelet adhesion and plug formation at sites of vascular injury.
a transmembrane cell-surface sialoglycoprotein on certain immune cells, defective in Wiskott-Aldrich syndrome
enzyme involved in the regulation of signal transduction in hematopoiesis; used histologically to differentiate between lymphomas and carcinomas
a membrane protein acting as an inhibitory complement receptor, being port-of-access for measles, human herpesvirus-6 and Neisseria.
plural of CD4
a 120-mm (5-inch) CD (compact disc)
a peptide of 12 amino acids, associated with certain types of lymphoma and targeted by alemtuzumab.
a cell surface glycoprotein which is typically expressed on endothelial and immune system cells, exploited by human rhinovirus as a receptor for cellular entry.