• synonyms


adjective Also di·e·tet·i·cal.
  1. pertaining to diet or to regulation of the use of food.
  2. prepared or suitable for special diets, especially those requiring a restricted sugar intake: a jar of dietetic jelly.
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  1. dietetics, (used with a singular verb) the science concerned with the nutritional planning and preparation of foods.
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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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for dietetic



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

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Online Etymology Dictionary, © 2010 Douglas Harper

dietetic in Medicine


  1. Of or relating to diet.
  2. Of or being a food that, naturally or through processing, has a low caloric content.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.