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dietician

British  
/ ˌdaɪɪˈtɪʃən /

noun

  1. a person who specializes in dietetics

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Explanation

A dietician is an expert in the field of food and nutrition. A dietician is like a physician for your diet. People who study food in a scientific way are dieticians — they are experts on food and its effects. Dieticians study nutrition, which is the science that looks at what good and bad things various foods do to your body. If you need to change what you eat because of a health problem, like diabetes or obesity, you should consult a dietician. It’s also spelled dietitian.

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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.

"Too often, it's about the look, rather than what healthy really means, which comes in all shapes and sizes," children's dietician Lucy Upton explains.

From BBC • Sep. 14, 2025

During her pregnancy she was monitored frequently by multiple health care teams including an obstetrician, midwife, kidney doctor, dialysis nurse and kidney dietician at Sheffield Teaching Hospitals NHS Foundation Trust.

From BBC • Dec. 2, 2024

"It is 2-fold," explains Kimberly Gomer, a Miami dietician and nutritionist.

From Salon • Jan. 15, 2024

Something called the ileocecal valve, located between the small intensive and large intestine, may be involved, according to Jef L’Ecuyer, a registered dietician.

From Slate • Nov. 5, 2023

Mama had worked as a dietician in Washington after she was married.

From "Farewell to Manzanar" by Jeanne Houston