cilium
/ˈsɪl.i.əm/noun
Middle School
1
A short microscopic hairlike organelle projecting from a eukaryotic cell (such as a unicellular organism or one cell of a multicelled organism) which serve either for propulsion by causing currents in the surrounding fluid or as sensors.
2
One of the fine hairs along an insect's wing.
3
One of the hairs or similar protrusions along the margin of an organ.
4
An eyelash.
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