[ dahy-i-tet-ik ]
/ ˌdaɪ ɪˈtɛt ɪk /

adjective Also di·e·tet·i·cal.

pertaining to diet or to regulation of the use of food.
prepared or suitable for special diets, especially those requiring a restricted sugar intake: a jar of dietetic jelly.


dietetics, (used with a singular verb) the science concerned with the nutritional planning and preparation of foods.

Origin of dietetic

1535–45; < Latin diaeteticus < Greek diatētikós, equivalent to diatē-, variant stem of diaitân to treat, regulate (derivative of díaita diet1) + -tikos -tic

Related forms

di·e·tet·i·cal·ly, adverbnon·di·e·tet·ic, adjectivenon·di·e·tet·i·cal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for dietetics

British Dictionary definitions for dietetics (1 of 2)


/ (ˌdaɪɪˈtɛtɪks) /


(functioning as singular) the scientific study and regulation of food intake and preparation

British Dictionary definitions for dietetics (2 of 2)



/ (ˌdaɪɪˈtɛtɪk) /


denoting or relating to diet or the regulation of food intake
prepared for special dietary requirements

Derived Forms

dietetically, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for dietetics (1 of 2)


[ dī′ĭ-tĕtĭks ]


The branch of therapeutics concerned with the practical application of diet in relation to health and disease.

Medicine definitions for dietetics (2 of 2)


[ dī′ĭ-tĕtĭk ]


Of or relating to diet.
Of or being a food that, naturally or through processing, has a low caloric content.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.