diet Definition in Cambridge British English Dictionary
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Definition of "diet" - British English Dictionary

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dietnoun

uk   us   /ˈdaɪ.ət/
B1 [C or U] the food and drink usually eaten or drunk by a person or group: Diet varies between different countries in the world. a healthy/balanced/varied diet Rice is the staple diet (= most important food) of many people in China. The children seem to exist on a diet of fried food.B1 [C] an eating plan in which someone eats less food, or only particular types of food, because they want to become thinner or for medical reasons: I'm going on a diet next week and hope to lose ten pounds before Christmas. a crash/strict/calorie-controlled diet The doctor put me on a low-salt diet to reduce my blood pressure. [S] a particular type of thing that you experience or do regularly, or a limited range of activities: He was brought up on a diet of political propaganda from birth. Network TV only offers a diet of bad reality shows every night.
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dietadjective [before noun]

uk   us   /ˈdaɪ.ət/
Diet food or drink contains less sugar or fat than the usual type, and often contains an artificial sweetener: diet cola

dietverb [I]

uk   us   /ˈdaɪ.ət/
to limit the food and/or drink that you have, especially in order to lose weight: You should be able to reduce your weight by careful dieting.
(Definition of diet from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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