Definition of acorn worm in English:

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acorn worm

noun

A burrowing wormlike marine animal of shallow waters. Its body consists of a proboscis, a collar, and a long trunk with gill slits, and contains a notochordlike structure.
  • Class Enteropneusta, phylum Hemichordata.
Example sentences
  • The cilia on the larvae of acorn worms capture algae.
  • Pterobranchs as very different from acorn worms; they form colonies in which the individuals are interconnected by stems, or stolons.
  • An acorn worm isn't much more than a thin, cylindrical bag with a head and collar resembling an acorn.

For editors and proofreaders

Syllabification: a·corn worm

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