An Etymological Dictionary of Astronomy and Astrophysics

1. Any substance or matter that, taken into a living organism, serves to sustain it in its existence, promoting growth, replacing loss, and providing energy.
   

2. Anything that nourishes; nourishment; food (Dictionary.com).

Etymology (EN): From L. nutrimentum “nourishment; support,” from nutrire, → nourish.

Etymology (PE): Fârâk, from present stem of fâridan, → nourish,

• -âk (as in xorâk, pušâk, etc.).