- ep-
- prefix form of EPI- before a vowel or h.
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— see epi-* * *
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ep-,Ep.,Epistle.EP (no periods),1. European plan.2. extreme pressure.* * *
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ep-, prefixin words a. or ad. Gr., or f. Gr. elements, represents ἐπ-, shortened form of ἐπί before a vowel: see epi-.
Useful english dictionary. 2012.