1. food and drink considered in terms of its qualities, composition, and its effects on health: Milk is a wholesome article of diet.
2. a particular selection of food, especially as designed or prescribed to improve a person's physical condition or to prevent or treat a disease: a diet low in sugar.
3. such a selection or a limitation on the amount a person eats for reducing weight: No pie for me, I'm on a diet.
4. the foods eaten, as by a particular person or group: The native diet consists of fish and fruit.
5. food or feed habitually eaten or provided: The rabbits were fed a diet of carrots and lettuce.
6. anything that is habitually provided or partaken of: Television has given us a steady diet of game shows and soap operas.
verb (used with object), di·et·ed, di·et·ing.
7. to regulate the food of, especially in order to improve the physical condition.
8. to feed.
verb (used without object), di·et·ed, di·et·ing.
9. to select or limit the food one eats to improve one's physical condition or to lose weight: I've dieted all month and lost only one pound.
10. to eat or feed according to the requirements of a diet.
11. suitable for consumption with a weight-reduction diet; dietetic: diet soft drinks.
Origin: 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
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