Origin of diet

1
1175–1225; (noun) Middle English diete < Anglo-French, Old French < Latin diaeta < Greek díaita way of living, diet, equivalent to dia- dia- + -aita (akin to aîsa share, lot); (v.) Middle English dieten (transitive) < Anglo-French, Old French dieter, derivative of the noun

OTHER WORDS FROM diet

di·et·er, nounnon·di·et·er, nounnon·di·et·ing, adjective, noun

Definition for diet (2 of 2)

diet2
[ dahy-it ]
/ ˈdaɪ ɪt /

noun

the legislative body of certain countries, as Japan.
the general assembly of the estates of the former Holy Roman Empire.

Origin of diet

2
1400–50; late Middle English < Medieval Latin diēta public assembly, apparently the same word as Latin diaeta (see diet1) with sense affected by Latin diēs day
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for diet

British Dictionary definitions for diet (1 of 2)

diet1
/ (ˈdaɪət) /

noun

  1. a specific allowance or selection of food, esp prescribed to control weight or in disorders in which certain foods are contraindicateda salt-free diet; a 900-calorie diet
  2. (as modifier)a diet bread
the food and drink that a person or animal regularly consumesa diet of nuts and water
regular activities or occupations

verb

(usually intr) to follow or cause to follow a dietary regimen

Derived forms of diet

dieter, noun

Word Origin for diet

C13: from Old French diete, from Latin diaeta, from Greek diaita mode of living, from diaitan to direct one's own life

British Dictionary definitions for diet (2 of 2)

diet2
/ (ˈdaɪət) /

noun

(sometimes capital) a legislative assembly in various countries, such as Japan
Also called: Reichstag (sometimes capital) the assembly of the estates of the Holy Roman Empire
Scots law
  1. the date fixed by a court for hearing a case
  2. a single session of a court

Word Origin for diet

C15: from Medieval Latin diēta public meeting, probably from Latin diaeta diet 1 but associated with Latin diēs day
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 diet

diet
[ dīĭt ]

n.

Food and drink in general.
A prescribed course of eating and drinking in which the amount and kind of food, as well as the times at which it is to be taken, are regulated for therapeutic purposes.
Reduction of caloric intake so as to lose weight.

v.

To eat and drink according to a regulated system, especially so as to lose weight or control a medical condition.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.