acoelomate

noun

acoe·lo·mate (ˌ)ā-ˈsē-lə-ˌmāt

: 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

See more words from the same year

Cite this Entry

Style

“Acoelomate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acoelomate. Accessed 3 Oct. 2023.

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Medical Definition

acoelomate

noun

acoe·lo·mate (ˈ)ā-ˈsē-lə-ˌmāt

: 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