preprandial (adj.)

word-forming element meaning "before," from Old French pre- and Medieval Latin pre-, both from Latin prae (adverb and preposition) "before in time or place," from PIE *peri- (source also of Oscan prai, Umbrian pre, Sanskrit pare "thereupon," Greek parai "at," Gaulish are- "at, before," Lithuanian prie "at," Old Church Slavonic pri "at," Gothic faura, Old English fore "before"), extended form of root *per- (1) "forward," hence "beyond, in front of, before."

The Latin word was active in forming verbs. Also see prae-. Sometimes in Middle English muddled with words in pro- or per-.

also post-prandial, 1820 (Coleridge), "happening, said, done, etc. after dinner," from post- "after" + Latin prandium "luncheon" (usually bread, fish, or cold meat, taken around noon), from *pram "early" (from PIE *pre-, variant of root *per- (1) "forward," hence "in front of, before, first") + edere "to eat" (from PIE root *ed- "to eat") + -al (1). "Chiefly humorous" [OED].