dietitian

noun

di·​e·​ti·​tian ˌdī-ə-ˈti-shən 

variants or less commonly dietician

: a specialist in dietetics

Examples of dietitian in a Sentence

Recent Examples on the Web

Here are nine reasons why dietitians say watermelon should be on your shopping list this summer. —Sherri Gordon, Health, 3 July 2025

These conclusions line up with previous studies on people with diabetes, says Dalia Perelman, who's a research dietitian at Stanford University and wasn't involved in this research. —Michaeleen Doucleff, NPR, 3 July 2025

Consult a healthcare provider or registered dietitian before making significant changes to your diet. —Jamie Johnson, Verywell Health, 27 June 2025

Sherry Coleman Collins, a food allergy dietitian and expert from the Atlanta metropolitan area, suggested the cautions about seed oils may be exaggerated, but did recommend choosing wisely. —Melissa Rudy, FOXNews.com, 25 June 2025

Word History

Etymology

dietitian irregular from diet entry 1 + -ician

First Known Use

circa 1846, in the meaning defined above

Rhymes for dietitian

• abolition
• acquisition
• admonition
• ammunition
• apparition
• apposition
• coalition
• competition
• composition
• definition
• deglutition
• demolition

Kids Definition

dietitian

noun

di·​eti·​tian

variants or dietician

ˌdī-ə-ˈtish-ən

: a specialist in dietetics

Medical Definition

dietitian

noun

di·​eti·​tian

variants or dietician

ˌdī-ə-ˈtish-ən 

: a specialist in dietetics