n. [ L. iasponyx, Gr. &unr_;. See Jasper, and Onyx. ] (min.) An onyx, part or all of whose layers consist of jasper. [ 1913 Webster ]
‖n. [ Gr.
‖n. [ NL., from Gr.
n. [ L., fr. Gr. &unr_; a claw, finger nail, a veined gem. See Nail, and cf. Onycha. ]
Onyx marble,
Mexican onyx
a. Deep, jet-black. [ PJC ]
n. [ L., fr. Gr. &unr_;. See Sard, and Onyx. ] (Min.) A variety of onyx consisting of sard and white chalcedony in alternate layers. [ 1913 Webster ]
‖n. [ NL., fr. Gr. &unr_; (see Tri-) + &unr_; 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
☞ 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 ]