vastus

[ vas-tuhs ]
/ ˈvæs təs /

noun, plural vas·ti [vas-tahy]. /ˈvæs taɪ/. Anatomy.

any of several muscles in the front part of the thigh constituting part of the quadriceps muscle, the action of which assists in extending the leg.

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Origin of vastus

<Latin: vast
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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