n.
An internal supporting skeleton, derived from the mesoderm, that is characteristic of vertebrates and certain invertebrates.
endoskeletal en'do·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.
