si•pun•cu•lid
We found 2 definitions of sipunculid from 2 different sources.
Noun |
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sipunculid - small unsegmented marine worm that when disturbed retracts its anterior portion into the body giving the appearance of a peanut | ||
peanut worm | ||
invertebrate any animal lacking a backbone or notochord; the term is not used as a scientific classification |