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[kwod-ruh-seps] /ˈkwɒd rəˌsɛps/
noun, plural quadricepses
[kwod-ruh-sep-siz] /ˈkwɒd rəˌsɛp sɪz/ (Show IPA),
quadriceps. Anatomy
a large muscle in front of the thigh, the action of which extends the leg or bends the hip joint.
Origin of quadriceps
1830-40; < New Latin, equivalent to quadri- quadri- + -ceps; see biceps
Related forms
[kwod-ruh-sip-i-tl] /ˌkwɒd rəˈsɪp ɪ tl/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for quadriceps


noun (pl) -cepses (-ˌsɛpsɪz), -ceps
(anatomy) a large four-part muscle of the front of the thigh, which extends the leg
Derived Forms
quadricipital (ˌkwɒdrɪˈsɪpɪtəl) adjective
Word Origin
C19: New Latin, from quadri- + -ceps as in biceps
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for quadriceps

1840, see quadricep.

Online Etymology Dictionary, © 2010 Douglas Harper
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quadriceps in Medicine

quadriceps quad·ri·ceps (kwŏd'rĭ-sěps')
The large four-part extensor muscle at the front of the thigh. adj.
Having four heads, said of certain muscles.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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quadriceps in Science
The large, four-part muscle at the front of the thigh that arises in the hip and pelvis and inserts as a strong tendon below the kneecap (patella). The quadriceps straightens and helps stabilize the knee.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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