Medical Dictionary
4 ENTRIES FOUND:

psoas

noun pso·as \ˈsō-əs\
plural pso·ai \ˈsō-ˌī\ or pso·ae \-ˌē\

Definition of PSOAS

:  either of two internal muscles of the loin: a :  psoas major b :  psoas minor
March 27, 2015
quiescent Hear it
Tranquilly at rest or causing no trouble
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