postprandial (adj.)youdaoicibaDictYouDict[postprandial 词源字典]
also post-prandial, 1820, 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, through;" see per) + edere "to eat" (see edible) + -al (1).[postprandial etymology, postprandial origin, 英语词源]