dietary

American  

[dahy-i-ter-ee] / ˈdaɪ ɪˌtɛr i /

adjective

1. of or relating to diet.

   a dietary cure.

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noun

dietaries plural

1. a regulated allowance of food.

2. Obsolete. a system or course of diet.

dietary British  

/ ˈdaɪətərɪ, -trɪ /

adjective

1. of or relating to a diet

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noun

1. a regulated diet

2. a system of dieting

Other Word Forms

Derived Forms

• predietary
  adjective
• dietarily
  adverb

Inflected Forms

noun

• dietaries
  plural

Etymology

Origin of dietary

1400–50; late Middle English dietarie system of diet. See diet ¹, -ary

Example Sentences

Some questions to pose to the group before the trip include: Does anyone have any dietary restrictions?

From MarketWatch • Jun. 11, 2026

Researchers from Monash University, the University of São Paulo, and Deakin University analyzed dietary and cognitive data from more than 2,100 middle-aged and older Australian adults who did not have dementia.

From Science Daily • Jun. 9, 2026

"As our understanding of these compounds grows, there is a real opportunity to make dietary guidance more specific and more effective."

From BBC • Jun. 8, 2026

Every four years, they completed detailed dietary questionnaires that allowed researchers to track eating habits over time.

From Science Daily • Jun. 3, 2026

Stephen Kellner was extremely attentive to my dietary indiscretions.

From "Darius the Great Is Not Okay" by Adib Khorram