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Related to psoas: psoas minor, Psoas sign


1. The larger of two muscles that originate in the lower spine. This muscle flexes the hip. Also called psoas major.
2. The smaller of two muscles that originate in the lower spine. This muscle flexes the lower spine. Also called psoas minor.

[New Latin, from Greek psoa.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Anatomy) either of two muscles of the loins that aid in flexing and rotating the thigh
[C17: from New Latin, from Greek psoai (pl)]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈsoʊ əs)

n., pl. pso•ai (sō′ī), pso•ae (sō′ē).
either of a pair of deep loin muscles extending from the sides of the spine to the femur.
[1675–85; < New Latin < Greek psóās]
pso•at′ic (-ˈæt ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.psoas - either of two muscles of the abdomen and pelvis that flex the trunk and rotate the thigh
skeletal muscle, striated muscle - a muscle that is connected at either or both ends to a bone and so move parts of the skeleton; a muscle that is characterized by transverse stripes
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


n psoas m
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in periodicals archive ?
Metabolite profile differences between beef longissimus and psoas muscles during display.
"The psoas muscles originate at the sides of the lower vertebrae (in your spine) and run down through the pelvis, where it joins the iliacus (another hip flexor) and attaches to the femur or thigh bone," explains Dana Aaron, an advanced clinician at the Weill Cornell-affiliated Hospital for Special Surgery's Sports and Performance Center.
Las cuatro venas restantes eran de 1 mm de diametro aproximadamente, y se unieron para formar dos venas frente a la parte inferior de los musculos psoas e iliaco derechos (aproximadamente 2 cm por encima del anillo inguinal profundo).
Nonetheless, the present study aimed to investigate the protein oxidation, texture profile and proximate composition of muscles longissimus lumborum and psoas major, obtained from Bos indicus (Nellore) cattle finished in grain, during nine days of storage (4 [degrees]C).
A second MRI, taken on day 13 of admission, showed discitis and osteomyelitis of the C3 and C4 vertebrae, return of the retropharyngeal collection, and enlargement of the psoas and epidural collections, with evidence of compression of the distal cord.
Complications (arachnoiditis, paravertebral and psoas abscesses) were detected in 47 (39.8%) patients.
Paraspinal HD without the involvement of other organs is extremely rare (0.5%-3%), and the psoas muscle and lumbar paraspinal muscles are the most common locations of paraspinal HD (2, 4, 6).
External iliac artery: This goes along the medial border of the psoas muscle to the level of femoral ring, which is below the inguinal ligament.
Of the 4 patients with mycotic aneurysm caused by Salmonella reported at our center, 1 patient was complicated with psoas abscess.
All 16 cases of appendicular abscess and 5 cases of psoas abscess were managed by extraperitoneal drainage.
We present an instance of clinical success with ceftazidime/avibactam for the treatment of KPC bacteremia and vertebral diskitis/osteomyelitis with pre-vertebral abscess and bilateral psoas pyomyositis.