s as z. The loss or defect of the power of voluntary muscular motion in the whole body, or in a particular part; paralysis. When one side only of the body is affected, it is called hemiplegy. When the lower part of the body is paralytic, it is called paraplegy. Palsy may be a loss of the power of motion without a loss of sensation, or a loss of sensation without loss of motion, or a loss of both.

s as z. To paralyze; to deprive of the power of motion; to destroy energy.