En`to*zo"a (?), n. pl. [NL., fr. Gr. within + an animal.] Zool.

1.

A group of worms, including the tapeworms, flukes, roundworms, etc., most of which live parasitically in the interior of other animals; the Helminthes.

2.

An artificial group, including all kinds of animals living parasitically in others.

 

© Webster 1913.

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