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acoelomate

American  
[ey-see-luh-meyt, ey-see-loh-mit] / eɪˈsi ləˌmeɪt, ˌeɪ siˈloʊ mɪt /

adjective

  1. Also acoelomatous acoelomous. having no coelum.

noun

  1. any organism that lacks a cavity between the body wall and the digestive tract, including the flatworms, nemertines, and sea anemones.

Etymology

Origin of acoelomate

First recorded in 1875–80; a- 6 + coelomate

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The flatworms are acoelomate, so their bodies contain no cavities or spaces between the outer surface and the inner digestive tract.

From Textbooks • Apr. 25, 2013

The flatworms are acoelomate organisms that include free-living and parasitic forms.

From Textbooks • Apr. 25, 2013

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.