[ bahy-seps ]
/ ˈbaɪ sɛps /

noun, plural bi·ceps·es [bahy-sep-siz] /ˈbaɪ sɛp sɪz/, bi·ceps. Anatomy.

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 of biceps

1625–35; < Latin: two-headed, having two parts, equivalent to bi- bi-1 + -ceps (stem -cipit-), combining form of caput head

Definition for biceps (2 of 2)


[ bahy-sep ]
/ ˈbaɪ sɛp /


a biceps muscle, especially the one at the front of the upper arm.

Origin of bicep

First recorded in 1955–60; back formation from biceps Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for biceps

British Dictionary definitions for biceps


/ (ˈbaɪsɛps) /

noun plural -ceps

anatomy any muscle having two heads or origins, esp the muscle that flexes the forearmRelated adjective: bicipital

Word Origin for biceps

C17: from Latin: having two heads, from bi- 1 caput 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

Medicine definitions for biceps


[ bīsĕps′ ]

n. pl. biceps

A muscle with two heads or points of origin.
The biceps brachii.
The biceps femoris.

Related forms

bi•cipi•tal (-sĭpĭ-tl) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for biceps


[ bīsĕps′ ]

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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.