Babinski sign

(redirected from plantar reflex, positive Babinski)
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Noun1.Babinski sign - extension upward of the toes when the sole of the foot is stroked firmly on the outer side from the heel to the frontBabinski sign - extension upward of the toes when the sole of the foot is stroked firmly on the outer side from the heel to the front; normal in infants under the age of two years but a sign of brain or spinal cord injury in older persons