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The Collaborative International Dictionary
Cestoid

Cestoid \Ces"toid\ (s[e^]s"toid), a. (Zo["o]l.) Of or pertaining to the Cestoda. -- n. One of the Cestoda. [1913 Webster] ||

Wiktionary
cestoid

a. Of or pertaining to the Cestoidea; cestoidean n. Any of the parasitic flatworms of the class Cestoda.