exoskeleton

exoskeleton definition - medical

ex·o·skel·e·ton (ĕkˌsō-skĕlˈĭ-tn)

noun
  1. All hard parts, such as hair, teeth, and nails, that develop from the ectoderm or mesoderm in vertebrates.
  2. A hard outer structure, such as the shell of an insect, that provides protection or support for an organism.

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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