pectoral muscle


noun

either of two large chest muscles (pectoralis major and pectoralis minor), that assist in movements of the shoulder and upper arm

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Medical definitions for pectoral muscle

pectoral muscle

n.

Either of two muscles in the chest, the pectoralis major or the pectoralis minor.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.