phys·​i·​ol·​o·​gist ˌfi-zē-ˈä-lə-jist How to pronounce physiologist (audio)
plural physiologists
: a person specializing in the biological study of the functions and processes of living organisms and their parts : a biologist specializing in physiology
Beall also compared the percentage of hemoglobin in each person's blood that carries oxygen—a value known by physiologists as oxygen saturation.Jessica Gorman
The "fight or flight" reaction has long been known to physiologists: the heart beats faster, the muscles are readied and the body is primed in the most primitive of survival instincts.David Golman
Every exercise program should be personally prescribed by a professional—such as a sports-medicine physician or an exercise physiologist—and should aim at improving flexibility, strength and cardiovascular functioning.Deborah Blumenthal

Examples of physiologist in a Sentence

Recent Examples on the Web More than two centuries ago, physiologist Jan Evangelista Purkyně noted how dissimilar red flowers appear on sunny days versus nighttime. Ashley Strickland, CNN, 6 Apr. 2024 By Angela Haupt February 2, 2024 1:46 PM EST When Tom Holland, a 54-year-old exercise physiologist, shovels snow at home in Connecticut, someone always starts shouting at him. TIME, 2 Feb. 2024 Exercise physiologist Heather Hart, CSCS, runs ultramarathons (that’s any race longer than 26.2 miles) and absolutely can sometimes still experience breathlessness when climbing up one. Jenny McCoy, SELF, 20 Feb. 2024 Today, physiologists and anthropologists like Ocobock are focused more on distinguishing what happens within bodies that are accustomed to cold. Max G. Levy, WIRED, 6 Jan. 2024 Stanford’s practice takes a holistic approach, employing a psychologist, a dietitian, and an exercise physiologist, so patients on semaglutides have a multi-pronged protocol. Fiorella Valdesolo, Vogue, 21 Dec. 2023 That shift is part of the relatively recent recognition that the quality and duration of sleep are public health issues, says physiologist Marta Garaulet of the University of Murcia in Spain. Lydia Denworth, Scientific American, 10 Nov. 2023 Meet the expert: Alyssa Lombardi, CPT, is a certified personal trainer, running coach, and exercise physiologist. Andi Breitowich, Women's Health, 28 June 2023 The Key to Weight Loss The road to actual, sustainable weight loss is not-so-straightforward, Liz Davis MA EP-C, a clinical exercise physiologist in Columbus, Ohio, told Health. Julia Sullivan, Health, 3 Nov. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'physiologist.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1666, in the meaning defined above

Time Traveler
The first known use of physiologist was in 1666

Dictionary Entries Near physiologist

Cite this Entry

“Physiologist.” Dictionary, Merriam-Webster, Accessed 23 May. 2024.

Kids Definition


: a specialist in physiology

Medical Definition


phys·​i·​ol·​o·​gist ˌfiz-ē-ˈäl-ə-jəst How to pronounce physiologist (audio)
: a specialist in physiology

More from Merriam-Webster on physiologist

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