English noun: knee-jerk reflex | |||
| 1. | knee-jerk reflex (act) a reflex extension of the leg resulting from a sharp tap on the patellar tendon | ||
| Synonyms | knee jerk, patellar reflex | ||
| Broader (hypernym) | inborn reflex, innate reflex, instinctive reflex, physiological reaction, reflex, reflex action, reflex response, unconditioned reflex | ||