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biceps brachii

[brey-kee-ahy, -kee-ee, brak-ee-ahy, -ee-ee] /ˈbreɪ kiˌaɪ, -kiˌi, ˈbræk iˌaɪ, -iˌi/
noun
1.
See under biceps.
Origin
1855-60: < New Latin: literally, biceps of (the) arm

biceps

[bahy-seps] /ˈbaɪ sɛps/
noun, plural bicepses
[bahy-sep-siz] /ˈbaɪ sɛp sɪz/ (Show IPA),
biceps. Anatomy
1.
either of two flexor muscles, one (biceps brachii) located in the front of the upper arm and assisting in bending the arm, and the other (biceps femoris) located on the back of the thigh and assisting in bending the leg.
Origin
1625-35; < Latin: two-headed, having two parts, equivalent to bi- bi-1 + -ceps (stem -cipit-), combining form of caput head
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for bi ceps brachii

biceps

/ˈbaɪsɛps/
noun (pl) -ceps
1.
(anatomy) any muscle having two heads or origins, esp the muscle that flexes the forearm related adjective bicipital
Word Origin
C17: from Latin: having two heads, from bi-1caput head
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 bi ceps brachii

biceps

1630s (adj.), from Latin biceps "having two parts," literally "two-headed," from bis "double" (see bis-) + -ceps comb. form of caput "head" (see capitulum). As a noun meaning "biceps muscle," from 1640s, so called for its structure. Despite the -s, it is singular, and classicists insist there is no such word as bicep.

Online Etymology Dictionary, © 2010 Douglas Harper
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bi ceps brachii in Medicine

biceps bi·ceps (bī'sěps')
n. pl. biceps or bi·ceps·es (-sěp'sĭz)

  1. A muscle with two heads or points of origin.

  2. The large muscle at the front of the upper arm that flexes the forearm.

  3. The large muscle at the back of the thigh that flexes the knee joint.


bi·cip'i·tal (-sĭp'ĭ-tl) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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bi ceps brachii in Science
biceps
  (bī'sěps')   

Either of two muscles, biceps brachii of the arm or biceps femoris of the leg, each with two points of origin. The biceps of the arm bends the elbow, while the biceps of the leg helps to bend the knee as part of the hamstring.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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