knee jerk


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knee jerk

n.
A reflex contraction of the quadriceps muscle resulting in a sudden involuntary extension of the leg, produced by a sharp tap to the tendon below the patella; patellar reflex.

knee jerk

n
(Physiology) physiol Also called: patellar reflex an outward reflex kick of the lower leg caused by a sharp tap on the quadriceps tendon just below the patella
adj
made or occurring as a predictable and automatic response, without thought: kneejerk support.

knee′ jerk`



n.
a reflex extension of the leg resulting from a sharp tap on the patellar tendon.
[1875–80]

knee′-jerk`



adj.
Informal. reacting in an automatic, habitual manner; unthinking: a knee-jerk liberal.
[1895–1900]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.knee jerk - a reflex extension of the leg resulting from a sharp tap on the patellar tendon
Translations

knee jerk

n. reflejo de la rodilla que se produce con el toque de un martillo de goma en el ligamento de la patela.
References in periodicals archive ?
We reject the knee jerk allegations by some Afghan circles to point the finger at Pakistan for the terrorist attack on intercontinental hotel in Kabul.
There should not be knee jerk reactions; resignations by anyone will not yield any results
I'm guessing she can do much better than knee jerk Ashley.