worm

(wŏrm)

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1. An elongated invertebrate belonging to one of the following phyla: Platyhelminthes (flatworms); Nemathelminthes or Aschelminthes (roundworms or threadworms); Acanthocephala (spinyheaded worms); and Annelida (Annulata) (segmented worms).
SYN: SEE: helminth
2. Any small, limbless, creeping animal.
3. The median portion of the cerebellum.
4. Any wormlike structure.

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