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90s Slang You Should Know

medullary substance

medullary substance in Medicine

medullary substance n.

  1. The fatty material present in the myelin sheath of nerve fibers.

  2. See medulla.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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