# dietary

> English word · Noun · IPA /ˈdaɪət(ə)ɹi/ · frequency rank #11,199

## Definitions
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.

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

## Easily confused with
- **dreary** (https://plainspell.com/en/vs/dietary-vs-dreary)
- **dieter** (https://plainspell.com/en/vs/dietary-vs-dieter)
- **diary** (https://plainspell.com/en/vs/diary-vs-dietary)
- **diehard** (https://plainspell.com/en/vs/diehard-vs-dietary)

## Common misspellings (10)
`ddietary`, `deitary`, `dieatry`, `dietarry`, `dietaryy`, `dietayr`, `dietray`, `diettary`, `diteary`, `idetary`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/dietary