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Patellar reflex
Answer for the clue "Patellar reflex ", 9 letters:
knee jerk
Word definitions for knee jerk in dictionaries
WordNet
Word definitions in WordNet
n. a reflex extension of the leg resulting from a sharp tap on the patellar tendon [syn: knee-jerk reflex , patellar reflex ]
Wiktionary
Word definitions in Wiktionary
a. (alternative spelling of knee-jerk English) n. (alternative spelling of knee-jerk English)
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Knee jerk \Knee jerk\ (Physiol.) A jerk or forward kick of the lower part of the leg produced by a blow or sudden strain upon the patellar tendon of the knee, which causes a sudden contraction of the quadriceps muscle; the patellar reflex.