Pronunciation:
/ˌek.səʊˈskel.ɪ.tən/
Part of Speech:
Noun
Definition:
An exoskeleton is a hard outer structure that provides protection and support to the bodies of certain animals, such as insects, crustaceans, and some arachnids. It serves as both a defensive mechanism and a framework for muscle attachment.
Example Sentences:
- Crabs and lobsters have exoskeletons that protect them from predators.
- The exoskeleton of a beetle is made of chitin and offers excellent protection.
Etymology:
The word “exoskeleton” comes from the Greek “exo,” meaning “outside,” and “skeleton,” which refers to the supportive structure of an organism.
Synonyms and Antonyms:
- Synonyms: shell, armor, carapace
- Antonyms: endoskeleton (internal skeleton)
Usage Notes:
Exoskeletons are primarily found in invertebrates and differ from endoskeletons, which are internal structures found in vertebrates like humans. Exoskeletons must be periodically shed and replaced as the organism grows, a process known as molting.
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