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The Collaborative International Dictionary
Anenterous

Anenterous \An*en"ter*ous\, a. [Gr. 'an priv. + ? intestine, ? within, ? in.] (Zo["o]l.) Destitute of a stomach or an intestine.
--Owen. [1913 Webster] ||

Wiktionary
anenterous

a. (context zoology English) Without a stomach or an intestine.