Main Entry:

acoe·lo·mate

Pronunciation:

\(ˌ)ā-ˈsē-lə-ˌmāt\

Function:

noun

Date:

circa 1889

: 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