Pronunciation: (nOO-trish'un, nyOO-),[key] —n. 1. the act or process of nourishing or of being nourished.
2. the science or study of, or a course of study in, nutrition, esp. of humans.
3. the process by which organisms take in and utilize food material.
4. food; nutriment.
5. the pursuit of this science as an occupation or profession.