/ Dictionary / Index D dietetic: Meaning and Definition of Find definitions for: di•e•tet•ic Pronunciation: (dī"i-tet'ik), [key] — adj. —n. the science concerned with the nutritional planning and preparation of foods. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dietetic (Thesaurus) dietary law diethylacetal Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language