nutrition

Concise Oxford English Dictionary © 2008 Oxford University Press:
nutrition/njuˈtrɪʃn/

▶noun

• 1 the process of ingesting and assimilating nutrients.

  ■ food; nourishment.

• 2 the branch of science concerned with nutrients and their ingestion.

– derivatives
nutritional adjective,
nutritionally adverb,
nutritionist (also nutritionalist) noun.

– origin ME: from late L. nutritio(n-), from nutrire ‘nourish’.