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Medical Dictionary


noun ser·ra·tus \se-ˈrāt-əs\
plural ser·ra·ti \-ˈrā-ˌtī\

Medical Definition of SERRATUS

:  any of three muscles of the thorax that have complex origins but arise chiefly from the ribs or vertebrae: a :  serratus anterior b :  serratus posterior inferior c :  serratus posterior superior
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