psoas major

noun

Medical Definition of psoas major

: the larger of the two psoas muscles that arises from the anterolateral surfaces of the lumbar vertebrae, passes beneath the inguinal ligament to insert with the iliacus into the lesser trochanter of the femur, and serves especially to flex the thigh

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psoas major

psoas minor

Cite this Entry

“Psoas major.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/psoas%20major. Accessed 22 Oct. 2021.

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