crus·​ta·​ceous | \ ˌkrə-ˈstā-shəs How to pronounce crustaceous (audio) \

Definition of crustaceous

: of, relating to, having, or forming a crust or shell

Examples of crustaceous in a Sentence

Recent Examples on the Web From the deep-sea dwellers chomping on Cold War nuclear bomb particles to humble swimmers living in cave streams in Illinois, these crustaceous scavengers have adapted to all sorts of environments. Jason Daley, Smithsonian, 29 Oct. 2019 The light effluvia of Spanish sherry and the satin sweep of fresh crustaceous briny delight is all soon gone. Frier Mccollister, Orange County Register, 8 June 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'crustaceous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of crustaceous

circa 1646, in the meaning defined above

History and Etymology for crustaceous

New Latin crustaceus, from Latin crusta crust, shell

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The first known use of crustaceous was circa 1646

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Cite this Entry

“Crustaceous.” Dictionary, Merriam-Webster, Accessed 3 Dec. 2021.

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