schwann cell

noun Biology.

1. a cell of the peripheral nervous system that wraps around a nerve fiber, jelly-roll fashion, forming the myelin sheath.

n.

1. Any of the cells that cover the nerve fibers in the peripheral nervous system and form the myelin sheath.neurilemma neurilemma cell

1. Any of the cells that cover the axons in the peripheral nervous system and form the myelin sheath. See more at myelin.