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Achilles reflex

or Achilles' reflex

noun
  1. ankle jerk.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

achilles reflex in Medicine

Achilles reflex

n.
  1. 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
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.