dietitian

noun

di·​e·​ti·​tian ˌdī-ə-ˈti-shən How to pronounce dietitian (audio)
variants or less commonly dietician
: a specialist in dietetics

Examples of dietitian in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Connecting with a dietitian or nutritionist can also make a meaningful difference in your child's long-term health. Heidi Cope, Health, 13 Apr. 2026 The detours through the fast-food drive-thrus aggravated my dietitian to no end. Deputy Managing Editor, Los Angeles Times, 10 Apr. 2026 But claims of extra benefits — like boosting metabolism — aren’t well-supported by evidence, says the dietitian Meaghan Ormsby, RDN, an intuitive eating and wellness travel expert at the Nutrition Travel Exchange. Emily Kay Votruba, EverydayHealth.com, 7 Apr. 2026 Too Much Potassium One banana has about 400 milligrams (mg) of potassium, said Alexandra Rosenstock, RD, CDN, a dietitian at Weill Cornell Medicine and NewYork-Presbyterian. Maggie O'Neill, Verywell Health, 6 Apr. 2026 See All Example Sentences for dietitian

Word History

Etymology

dietitian irregular from diet entry 1 + -ician

First Known Use

circa 1846, in the meaning defined above

Time Traveler
The first known use of dietitian was circa 1846

Browse Nearby Words

Cite this Entry

“Dietitian.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dietitian. Accessed 24 Apr. 2026.

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
: a specialist in dietetics

More from Merriam-Webster on dietitian

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster