Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of sipunculacea is as below...

Sipunculoidea :: Sipunculoidea (n. pl.) In a restricted sense, same as Sipunculacea..

Sipunculacea :: Sipunculacea (n. pl.) A suborder of Gephyrea, including those which have the body unarmed and the intestine opening anteriorly..

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