sheath

sheath definition - medical

sheath (shēth)

noun pl. sheaths (shēÞz, shēths)
An enveloping tubular structure, such as the tissue that encloses a muscle or nerve fiber.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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