acoelomate

noun

acoe·​lo·​mate (ˌ)ā-ˈsē-lə-ˌmāt How to pronounce acoelomate (audio)
: an invertebrate lacking a coelom
especially : one belonging to the group comprising the flatworms and nemerteans and characterized by bilateral symmetry and a digestive cavity that is the only internal cavity
acoelomate adjective

Word History

Etymology

a- entry 2 + coelomate

First Known Use

circa 1889, in the meaning defined above

Time Traveler
The first known use of acoelomate was circa 1889

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Cite this Entry

“Acoelomate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acoelomate. Accessed 1 Mar. 2025.

Medical Definition

acoelomate

noun
acoe·​lo·​mate (ˈ)ā-ˈsē-lə-ˌmāt How to pronounce acoelomate (audio)
: an invertebrate lacking a coelom
especially : one belonging to the group comprising the flatworms and nemerteans (class Nemertea or Nemertinea) and characterized by bilateral symmetry and a digestive cavity that is the only internal cavity
acoelomate adjective

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