[ ek-soh-skel-i-tn ]
/ ˌɛk soʊˈskɛl ɪ tn /

noun Zoology.

an external covering or integument, especially when hard, as the shells of crustaceans (opposed to endoskeleton).

Origin of exoskeleton

First recorded in 1840–50; exo- + skeleton

OTHER WORDS FROM exoskeleton

ex·o·skel·e·tal, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for exoskeletal

British Dictionary definitions for exoskeletal

/ (ˌɛksəʊˈskɛlɪtən) /


the protective or supporting structure covering the outside of the body of many animals, such as the thick cuticle of arthropodsCompare endoskeleton

Derived forms of exoskeleton

exoskeletal, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for exoskeletal

[ ĕk′sō-skĕlĭ-tn ]


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.

Scientific definitions for exoskeletal

[ ĕk′sō-skĕlĭ-tn ]

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.