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Noun: reflex action
  1. An automatic instinctive unlearned reaction to a stimulus
    "The doctor tested the patient's reflex actions by tapping the knee";
    - reflex, reflex response, instinctive reflex, innate reflex, inborn reflex, unconditioned reflex, physiological reaction

Derived forms: reflex actions

Type of: reaction, response

Encyclopedia: Reflex action