[gas-trok-nee-mee-uh s, gas-truh-nee-]
- the largest muscle in the calf of the leg, the action of which extends the foot, raises the heel, and assists in bending the knee.
Origin of gastrocnemius
1670–80; < New Latin < Greek gastroknēm(ía) calf of the leg + Latin -ius noun suffix
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for gastrocnemius
On the tibiotarsus, the peroneus and gastrocnemius muscles were measured.Phylogeny of the Waxwings and Allied Birds
M. Dale Arvey
The gastrocnemius, when it contracts, extends the foot on the leg.
Then she raised one of them, and her fingers explored the common tendon of the soleus and gastrocnemius.Gray youth
Then it accompanies the gastrocnemius, and becomes tendinous where the tendo-Achillis commences.
It is on the external aspect of the latter we perceive it, between the peroneals and the gastrocnemius or tendo-Achillis.
Word Origin and History for gastrocnemius
1670s, from Latinized form of Greek gastroknemia "calf of the leg," from gaster "belly" (see gastric) + kneme "leg." So called for its form. Related: Gastrocnemical.
Online Etymology Dictionary, © 2010 Douglas Harper
- A muscle with its origin from the lateral and medial condyles of the femur, with insertion with the soleus muscle by the Achilles tendon into the lower half of the posterior surface of the calcaneus, with nerve supply from the tibial nerve, and whose action causes plantar flexion of the foot.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.