S Medical Abbreviation

sacrum

In vertebrates with pelves, the fused portion of the vertebral column to which the pelvis is attached.

Sinister

Stumble

Sensory

Relating to sensation, to the perception of a stimulus, to the voyage made by incoming nerve impulses from the sense organs to the nerve centers or to the senses themselves.

Sickness

sine - without (usually written with a bar on top of the "s")