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nutritionist

[noo-trish-uh-nist, nyoo-]
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noun
  1. a person who is trained or expert in the science of nutrition.

Origin of nutritionist

First recorded in 1925–30; nutrition + -ist
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for nutritionist

nutritionist

noun
  1. a person who specializes in nutrition and the nutritive value of various foods
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

Word Origin and History for nutritionist

n.

1926, from nutrition + -ist.

Online Etymology Dictionary, © 2010 Douglas Harper

nutritionist in Medicine

nutritionist

(nōō-trĭshə-nĭst)
n.
  1. One who is trained or is an expert in the field of nutrition.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.