word-forming element meaning "drug, medicine," also "poison," from Latinized form of Greek pharmakon "drug, poison" (see pharmacy).

word-forming element meaning "food, nourishment," from Greek -trophia, from trophe "food, nourishment," related to trephein "make thrive, nourish, rear; to make solid, congeal, thicken."

word-forming element meaning "eating," from Latin -vorous, from stem of vorare "to devour" (from PIE root *gwora- "food, devouring").

word-forming element meaning "eating, feeding on," from Latin -phagus, from Greek -phagos "eater of," from phagein "to eat," literally "to have a share of food," from PIE root *bhag- "to share out, apportion; to get a share."