Ep Definition

ep
abbreviation
Ephesians.
Webster's New World
Extended play (record, tape, etc.)
Webster's New World

Initialism of European Parliament.

Wiktionary

(automotive) Initialism of Extreme Pressure (an indicator used in lubricant additives.)

Wiktionary

(music) Initialism of Extended play (a vinyl record (recording on other media, such as a CD) that is shorter than an LP but longer than a single.)

Wiktionary
affix

Epi-

Epoxy.
Webster's New World
noun

(informal) Episode (of a TV serial, etc.)

Wiktionary