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

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

“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

In the wake of an anticipated fiber craze that is expected to trump last year’s protein-maxxing dietary fad, chia seeds have become all the rage.

From Salon • Mar. 31, 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

Feed: Like all animals, chickens have complex dietary requirements that must be met if they are to remain healthy and lay well.

From "Unusual Chickens for the Exceptional Poultry Farmer" by Kelly Jones