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masseter

American  
[ma-see-ter] / mæˈsi tər /

noun

Anatomy.
  1. a short, thick, masticatory muscle, the action of which assists in closing the jaws by raising the mandible or lower jaw.


masseter British  
/ ˌmæsɪˈtɛrɪk, mæˈsiːtə /

noun

  1. anatomy a muscle of the cheek used in moving the jaw, esp in chewing

"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

Other Word Forms

Etymology

Origin of masseter

1660–70; < New Latin < Greek massētḗr, variant of masētḗr chewer, masseter, equivalent to masē-, variant stem of masâsthai to chew + -tēr agentive suffix

Vocabulary lists containing masseter

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.

He did neck exercises and chewed extra-firm gum that he’d seen looksmaxxers claim would help build the jawline’s masseter muscles.

From The Wall Street Journal • May 11, 2026

About 40 units are needed for the masseter muscles to help soothe teeth clenching.

From The Wall Street Journal • Mar. 1, 2026

There was also evidence of an evolutionary connection between the extramandibular fat and the masseter muscle, which in humans connects the lower jawbone to the cheekbones and is a key muscle involved in chewing.

From Science Daily • Apr. 8, 2024

The rise of processed foods — beginning with the invention of canning in the early 1800s — softened diets to the point that the masseter muscles barely had to do any work when chewing.

From New York Times • Aug. 20, 2020

Internal aspect of skull, showing masseter, medial adductor, and temporal muscles.

From The Adductor Muscles of the Jaw In Some Primitive Reptiles by Fox, Richard C.

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