dietary

American  

[dahy-i-ter-ee] / ˈdaɪ ɪˌtɛr i /

adjective

1. of or relating to diet.

   a dietary cure.

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noun

plural

dietaries

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

• dietarily adverb
• predietary adjective

Etymology

Origin of dietary

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

Example Sentences

"We have been very limited in what kind of dietary information we can provide patients," said Sidhartha R. Sinha, MD, an assistant professor of gastroenterology and hepatology and the senior author on the paper.

From Science Daily • Apr. 3, 2026

The approach applies to items marketed and labeled as dietary supplements and provided to insurance beneficiaries under the direction of a physician.

From Barron's • Apr. 2, 2026

Long an authoritative source of health recommendations, the group releases dietary guidance about every five years to promote cardiovascular health.

From The Wall Street Journal • Mar. 31, 2026

“In summary, as part of heart-healthy dietary patterns, nontropical plant sources of fat should be used as part of food preparation in place of animal fats and tropical oils.”

From Los Angeles Times • Mar. 31, 2026

Milt and Tessie often had the Grossingers over to dinner, though their dietary restrictions continually baffled us.

From "Middlesex: A Novel" by Jeffrey Eugenides