Main Entry: epi-

Variant(s): or ep-

Function: prefix

Etymology: Latin, from Greek, from epi on, at, besides, after; akin to Old English eofot crime

1 : upon <epiphyte> : besides <epiphenomenon> : attached to <epididymis> : over <epicenter> : outer <epiblast> : after <epigenesis>
2 a : chemical entity related to (such) another <epimer> b : chemical entity distinguished from (such) another by having a bridge connection <epichlorohydrin>