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Wordnet 3.0

NOUN (1)

1. type genus of the Trionychidae;
[syn: Trionyx, genus Trionyx]


The Collaborative International Dictionary of English v.0.48:

Trionyx \Tri*on"yx\, n. [NL., fr. Gr. ? (see Tri-) + ? a claw.] (Zool.) A genus of fresh-water or river turtles which have the shell imperfectly developed and covered with a soft leathery skin. They are noted for their agility and rapacity. Called also soft tortoise, soft-shell tortoise, and mud turtle. [1913 Webster] Note: The common American species (Trionyx ferox syn. Aspidonectus ferox) becomes over a foot in length and is very voracious. Similar species are found in Asia and Africa. [1913 Webster]
WordNet (r) 3.0 (2006):

Trionyx n 1: type genus of the Trionychidae [syn: Trionyx, genus Trionyx]