n.
A hard outer structure, such as the shell of an insect or crustacean, that provides protection or support for an organism.
exoskeletal ex'o·skel'e·tal (-ĭ-tl) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
