or Achilles' reflex
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
A reflex bending of the foot resulting from contraction of the calf muscles when the Achilles tendon is sharply struck.Achilles jerk Achilles tendon reflex ankle reflex triceps surae reflex
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.