• synonyms


[pek-tuh-ral-is, -rey-lis, -rah-]
noun, plural pec·to·ral·es [pek-tuh-ral-eez, -rey-leez, -rah-] /ˌpɛk təˈræl iz, -ˈreɪ liz, -ˈrɑ-/. Anatomy.
  1. either of two muscles on each side of the upper and anterior part of the thorax, the action of the larger (pectoralis major) assisting in drawing the shoulder forward and rotating the arm inward, and the action of the smaller (pectoralis minor) assisting in drawing the shoulder downward and forward.
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Origin of pectoralis

< Latin pectorālis; see pectoral
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for pectoralis

Historical Examples of pectoralis

  • A closely allied form occurs in Alaska, and has been named Dallia pectoralis, Bean.

    The Voyage of the Vega round Asia and Europe, Volume I and Volume II

    A.E. Nordenskieold

  • The aneurism was of the third part of the axillary artery, and a ligature was applied at the lower margin of the pectoralis minor.

  • The clavicular portion of the pectoralis major must then be divided right across its fibres, which will retract.

  • The pectoralis transversus and other muscles were found to harbour a considerable number of encysted Trichin.


    T. Spencer Cobbold

  • The bolus consisted of a portion of the pectoralis major of a subject brought to the dissecting-room at the Middlesex Hospital.


    T. Spencer Cobbold