subclavius

[suhb-kley-vee-uh s]
noun, plural sub·cla·vi·i [suhb-kley-vee-ahy] /sʌbˈkleɪ viˌaɪ/. Anatomy.
  1. a small shoulder muscle, the action of which assists in depressing the shoulder.

Origin of subclavius

1695–1705; < New Latin subclāvius (musculus) subclavian (muscle), equivalent to Latin sub- sub- + clāvi(s) key (see clavicle) + -us adj. suffix
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Historical Examples of subclavius