nutritive (adj.) Look up nutritive at Dictionary.com
late 14c., from Old French nutritif and directly from Medieval Latin nutritivus "nourishing," from past participle stem of Latin nutrire "to nourish, suckle, feed," from PIE *nu-tri-, suffixed form (with feminine agent suffix) of *(s)nau- "to swim, flow, let flow," hence "to suckle," extended form of root *sna- "to swim."