ac·​tin·​u·​la | \ ak-ˈtin-yə-lə\
plural actinulas or actinulae\ ak-​ˈtin-​yə-​ˌlē \

Definition of actinula

: a creeping larva of the hydroid generation of certain coelenterates (as Tubularia) that finally attaches and develops into a polyp

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First Known Use of actinula

1864, in the meaning defined above

History and Etymology for actinula

New Latin, from actin- + -ula

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Time Traveler for actinula

The first known use of actinula was in 1864

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recurring in steady succession

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