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ENGLISH · A WORD WITH POSSIBILITIES

dietary.

A regulated diet that excludes or constrains certain types of food, especially for health reasons; also, a book or similar setting out such regulations.

7 characters3 syllables approx.English language

Meaning & usage

noun/ˈdaɪət(ə)ɹi/UK/ˈdaɪəˌtɛɹi/US
  1. A regulated diet that excludes or constrains certain types of food, especially for health reasons; also, a book or similar setting out such regulations.

  2. A prescribed meal plan setting out how the inhabitants of an institution (such as a prison, hospital etc.) should be fed, and on what foods.

Where this word comes from

From Medieval Latin diētārium (“book prescribing diet”), from Latin diaeta (“diet”).

adj/ˈdaɪət(ə)ɹi/UK/ˈdaɪəˌtɛɹi/US
  1. Pertaining to a prescribed diet; (generally), relating to what a person or animal eats.

    not-comparable
    If you have any dietary requirements, please inform the kitchen staff.
  2. Comprising a food source.

    not-comparable
Where this word comes from

From Medieval Latin diētārium (“book prescribing diet”), from Latin diaeta (“diet”).

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.