epi-

Above in location or position.

Upon, atop, directly on top of in terms of position.

Relating to epigenetics.

Secondary: a consequence, by-product, additional, or lesser version.

A part or segment that is located on the upper part of an object.

A part or location that is outer, particularly an outer layer.

Denotes an epimeric form.

Located on the surface.

Epibiotic: an organism that lives on another organism.

Outward in direction or projection.