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1540s, from Latin nutrimentum "nourishment; support," from nutrire "to nourish, suckle, feed," from PIE *nu-tri-, from root *(s)nau- "to swim, flow, let flow," hence "to suckle" (cf. Sanskrit snauti "she drips, gives milk;" Greek nan "I flow"), extended form of root *sna- "to swim" (see natatorium).
nutriment nu·tri·ment (nōō'trə-mənt, nyōō'-)
A source of nourishment; food.
An agent that promotes growth or development.