- a large muscle in front of the thigh, the action of which extends the leg or bends the hip joint.
Origin of quadriceps
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for quadriceps
The tendon of the quadriceps femoris, at once drew the patella at least two inches above its normal position.Report on Surgery to the Santa Clara County Medical Society
Joseph Bradford Cox
Quadriceps, kwod′ri-seps, n. the great muscle which extends the leg upon the thigh.
Quadriceps very weak; does not react to electrical stimulation.Surgical Experiences in South Africa, 1899-1900
George Henry Makins
The right leg will be raised and thrown forward with a jerk, owing to the contraction of the quadriceps muscles.A Practical Physiology
Albert F. Blaisdell
A further cause of disability, following upon sprains of the knee, is wasting of the quadriceps muscle.
- anatomy a large four-part muscle of the front of the thigh, which extends the leg
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
Word Origin and History for quadriceps
1840, see quadricep.
Online Etymology Dictionary, © 2010 Douglas Harper
- The large four-part extensor muscle at the front of the thigh.
- 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.
- 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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.