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arachnactis

noun
ar·​ach·​nac·​tis | \ ˌaˌrakˈnaktə̇s\
plural arachnactines\ əˌrakˌnakˈtī(ˌ)nēz \

Definition of arachnactis

: a free-swimming larva of certain actinians

History and Etymology for arachnactis

New Latin, from arachn- + Greek aktis ray

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