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Meaning of KNEE JERK

Pronunciation:  neejurk

WordNet Dictionary
 
 Definition: [n]  a reflex extension of the leg resulting from a sharp tap on the patellar tendon
 
 Synonyms: knee-jerk reflex, patellar reflex
 
 See Also: inborn reflex, innate reflex, instinctive reflex, physiological reaction, reflex, unconditioned reflex

 

 

Webster's 1913 Dictionary
 
 Definition: 
\Knee jerk\ (Physiol.)
A jerk or kick produced by a blow or sudden strain upon the
patellar tendon of the knee, which causes a sudden
contraction of the quadriceps muscle.
 

 

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