Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “diet”

diet

noun [C/U]    /ˈdɑɪ·ɪt/
the food and drink usually taken by a person or group: [C] A healthy diet includes fresh vegetables. [C] fig. Gifted students given a steady diet of grade-level curriculum learn they don’t need to work hard. A diet is also the particular food and drink you are limited to when you cannot eat or drink whatever you want to: [C] a low-salt diet [C] I’m going on a diet because I’ve got to lose some weight. dietary    /ˈdɑɪ·ɪˌter·i/ adjective Health experts say dietary changes have to start with children, who can be taught to appreciate a healthy diet.
(Definition of diet noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of diet

More American English definitions for “diet”

Definitions of “diet” in other dictionaries

Word of the Day

neighbourly

friendly or helpful

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More