an external covering or integument, especially when hard, as the shells of crustaceans (opposed to endoskeleton).
Origin of exoskeleton
Related formsex·o·skel·e·tal, adjective
First recorded in 1840–50; exo-
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for exoskeletal
Historical Examples of exoskeletal
British Dictionary definitions for exoskeletal
Derived Formsexoskeletal, adjective the protective or supporting structure covering the outside of the body of many animals, such as the thick cuticle of arthropodsCompare endoskeleton
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for exoskeletal
1847, from exo- + skeleton. Introduced by English anatomist Sir Richard Owen (1804-1892).
Online Etymology Dictionary, © 2010 Douglas Harper
All hard parts, such as hair, teeth, and nails, that develop from the ectoderm or mesoderm in vertebrates.
A hard outer structure, such as the shell of an insect, that provides protection or support for an organism.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
A hard, protective outer body covering of an animal, such as an insect, crustacean, or mollusk. The exoskeletons of insects and crustaceans are largely made of chitin. Compare endoskeleton.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.