Hypertext Webster Gateway: "flatworms"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Platyelminthes \Plat`y*el*min"thes\, n. pl. [NL. See {Platy-},
and {Helminthes}.] (Zo["o]l.)
A class of helminthes including the cestodes, or tapeworms,
the trematodes, and the turbellarians. Called also
{flatworms}.
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