thoracoacromial artery

noun
tho·ra·co·acro·mi·al artery | \ ˌthō-rə-ˌkō-ə-ˈkrō-mē-əl- \

Medical Definition of thoracoacromial artery 

: a short branch of the axillary artery that divides into four branches supplying the region of the pectoralis muscles, deltoid, subclavius, and sternoclavicular joint

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occurring twice a year or every two years

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