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

Foundayo, available this month, offers an advantage over Novo Nordisk’s oral Wegovy by lacking dietary restrictions.

From Barron's • Apr. 1, 2026

The federal government has been promoting an upside down pyramid that features steak and cheese at the top, along with vegetables, to go along with its new dietary guidelines.

From The Wall Street Journal • Mar. 31, 2026

Like the new federal dietary guidelines released back in January, the document cautions against processed foods and refined sugars.

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

The lockout software also monitored my dietary intake.

From "Ready Player One: A Novel" by Ernest Cline