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.

Nearby words

  1. dietary fiber,
  2. dietary fibre,
  3. dietary law,
  4. dietary supplement,
  5. dieter,
  6. dietetics,
  7. diethyl ether,
  8. diethyl oxide,
  9. diethylacetal,
  10. diethylaminoethanol

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 formsdi·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 dietetic

British Dictionary definitions for dietetic




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

Word Origin and History for dietetic



1570s, from Latin diaeteticus, from Greek diaitetikos "of or pertaining to diet," from diaita (see diet (1)). As a noun from 1759.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for dietetic




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.