ribbon worm

American  

noun

1. any of various slender, unsegmented marine worms of the phylum Nemertea, being able to contract and stretch to an extreme extent.

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ribbon worm British  

noun

1. another name for nemertean

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Etymology

Origin of ribbon worm

First recorded in 1850–55

Example Sentences

In addition, the researchers found further evidence in earlier studies of head-growing in three more ribbon worm species.

From Washington Post

Many species of marine ribbon worm have the ability to regrow their heads — an unprecedented example of related animals independently mastering the trick of regeneration.

From Nature

And it also must contend with milky ribbon worm, another predator of clams that is not deterred by the nets.

From Seattle Times

Walcott classified it as an arrow worm and later researchers suggested it might be a ribbon worm but it lacks characteristic features of both.

From Forbes