epi- prefix repr. Gr.
epi-, before an unaspirated vowel
ep-, before an aspirated vowel
eph-, a use of the adv.-prep.
epí on, upon, over, close up in time or space, in addition (to) = Skr.
ápi moreover, also, at, in (rel. to L.
ob towards, against, in OL. around, near).