noun, plural pso·ai [soh-ahy] /ˈsoʊ aɪ/, pso·ae [soh-ee] /ˈsoʊ i/. Anatomy.
Origin of psoas
Examples from the Web for psoas
Hyperæsthesia developed in more than one case in which injury to the psoas had led to hæmorrhage into the muscle sheath.Surgical Experiences in South Africa, 1899-1900|George Henry Makins
In psoas abscesses the exudation extends beneath the sheath of the muscle or between the iliacus and the bone.
This boy died before he was 20, with a psoas abscess, and I remember crying myself to sleep the night I learned of his death.Studies in the Psychology of Sex, Volume 2 (of 6)|Havelock Ellis
I had rather eat a sirloin of beef than know what they call the psoas muscle.The Man Who Laughs|Victor Hugo
If the subjacent iliac and psoas muscles be implicated, the thigh is flexed upon the leg in decubitus.
Word Origin for psoas
1680s, from Greek psoa (plural psoai) "muscles of the loins." Related: Psoitis.
Gk. [psoas], the gen. of the feminine noun [psoa], was mistaken by the French anatomist Jean Riolan (1577-1657) for the nom. of a (nonexistent) masculine noun. It was he who introduced this erroneous form into anatomy." [Klein]