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trapezius

[truh-pee-zee-uh s] /trəˈpi zi əs/
noun, plural trapeziuses. Anatomy
1.
a broad, flat muscle on each side of the upper and back part of the neck, shoulders, and back, the action of which raises, or rotates, or draws back the shoulders, and pulls the head backward or to one side.
Origin
1685-1695
1685-95; < Neo-Latin, short for trapezius musculus trapeziform muscle
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for trapezius

trapezius

/trəˈpiːzɪəs/
noun (pl) -uses
1.
either of two flat triangular muscles, one covering each side of the back and shoulders, that rotate the shoulder blades
Word Origin
C18: from New Latin trapezius (musculus) trapezium-shaped (muscle)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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