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dietitian

American  
[dahy-i-tish-uhn] / ˌdaɪ ɪˈtɪʃ ən /
Or dietician

noun

  1. a person who is an expert in nutrition or dietetics.


Etymology

Origin of dietitian

1840–50; diet 1 + -itian; -ician

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Not necessarily, says Kezia Joy, a registered dietitian, nutritionist and medical adviser at Welzo, a healthcare platform.

From MarketWatch • Jan. 30, 2026

Small switches are a great way to add more fibre to your meals, says dietitian Hilton.

From BBC • Jan. 16, 2026

If you do want a can of soup, “that’s ok” for most people, says Yasi Ansari, a registered dietitian in Los Angeles.

From The Wall Street Journal • Nov. 27, 2025

Caroline Weeks, a pediatric dietitian and nutritionist, posted a TikTok urging communities to think about Halloween “a little differently” this year.

From Salon • Oct. 30, 2025

Three became teachers, one became a nurse, and one became a dietitian.

From "While the World Watched: A Birmingham Bombing Survivor Comes of Age during the Civil Rights Movement" by Carolyn Maull McKinstry