trigemInal

[Mod. Lat. trigeminal is, from Lat. trigeminus (q.v.).] (See etym. and compound.) trigeminal-nerves, s. pl. Anat .: The trifacial nerves (q. v.). tri-gěm-in-ous, a. [TRIGEMINI.) T. hirundo (Sapphirine Gurnard), T. gurnard us (Gray Gurnard), T. cuculus (Bloch's Gurnard), T. lyra (the Piper), and T. obscura , or lucern a (the Long-finned Gurnard). Some of the species, by the vibration of the muscles of the swim bladder, pro- duce long-drawn sounds, which range over nearly an octave. [PIPER (1), 2.] from the Tertiary. 2. Palæont.: Two or three species are known, tri-glăng, s. [Pref. tri-, and glans =the nut-like fruit of forest trees, an acorn.] Bot.: A fruit having three nuts within an involucre, as the Spanish Chestnut. tri-glo-chin, subst . [Gr. trig loch is (gen it. triglōchinos)=three-barbed; pref. tri- , and Gr. glōchis (gen it. glōchinos ) =a projecting point. Named from the three projecting carpels.] Bot.: Arrow-gra ; a genus formerly called Juncago, typical of the order Juncaginacese. Saline plants; root fibrous, leaves very narrow; flowers in a naked, straight spike or a raceme; perianth of six erect, concave, deciduous leaves; stamens six, anthers nearly se ile, stigmas three to six, se ile, plumose; capsules three to six, one-seeded, united by 1. Being one of three born together; born three at a longitudinal receptacle; albumen none. Known a time. 2. Threefold. tri-gem-in-us ( pl . tri-gem-In-1), 8. [Lat.= three at a birth; pref. tri- , and geminus =a twin.] Anat . (pl.): The trigeminal nerves (q. v.). tri-gen-ic, a . [Pref. tri- ; Gr. gennaō-to produce, and English suff. ic .] Containing organic anhydride, aldehyde, and ammonia. trigenic-acid, s. Chemistry: C4H7N3O2=(CN)2O C2H3 (NH4)O. An acid containing the elements of cyanic anhydride and aldehyde ammonia, obtained by pa ing the vapor of cyanic acid over aldehyde. It crystallizes in small prisms, slightly soluble in water, insoluble in alcohol. When slightly heated it melts and carbonizes, giving off alkaline vapors having the odor of chino line.