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Having a valence of four; quadrivalent; tetravalent; sometimes, in a specific sense, having four hydroxyl groups, whether acid or basic.

Having a valence of four; tetratomic; quadrivalent.

ng, thallium; specifically, designating those compounds in which the element has a higher valence as contrasted with the thallous compounds; as, thallic oxide.

ing, thallium; specifically, designating those compounds in which the element has a lower valence as contrasted with the thallic compounds. [Written also thallious.]

titanium; specifically, designating those compounds of titanium in which it has a higher valence as contrasted with the titanous compounds. Titanic acid (Chem.), a white amorphous powder, Ti.(OH)4, obtained by decomposing certain titanates; -- called also normal titanic acid. By extension, any one of a series of deriv…

Designating certain compounds of titanium in which that element has a lower valence as contrasted with titanic compounds.

An element or radical whose valence is three. Triads of the Welsh bards, poetical histories, in which the facts recorded are grouped by threes, three things or circumstances of a kind being mentioned together. -- Hindoo triad. See Trimurti.

Having a valence of three; trivalent; sometimes, in a specific sense, having three hydroxyl groups, whether acid or basic; thus, glycerin, glyceric acid, and tartronic acid are each triatomic.

Having a valence of three; capable of being combined with, substituted for, or compared with, three atoms of hydrogen; -- said of triad atoms or radicals; thus, nitrogen is trivalent in ammonia.

Having a valence of one; capable of combining with, or of being substituted for, one atom of hydrogen; monovalent; -- said of certain atoms and radicals.

, or containing uranium; specifically, designating those compounds in which uranium has a valence relatively higher than in uranous compounds.

ning to, or containing, uranium; designating those compounds in which uranium has a lower valence as contrasted with the uranic compounds.

e Mind Are busy with poor Peter Bell; Upon the rights of visual sense Usurping, with a prevalence More terrible than magic spell. Wordsworth.

, especially that which hangs around a bedstead, from the bed to the floor. [Written also valence.] Valance of Venice gold in needlework. Shak.

See Valence.

ium; specifically distinguished those compounds in which vanadium has a relatively higher valence as contrasted with the vanadious compounds; as, vanadic oxide. Vanadic acid (Chem.), an acid analogous to phosphoric acid, not known in the free state but forming a well-known series of salts.

aining, vanadium; specifically, designating those compounds in which vanadium has a lower valence as contrasted with the vanadic compounds; as, vanadious acid. [Sometimes written also vanadous.]

Subject to heat; having prevalence of heat, or little or no cold weather; as, the warm climate of Egypt.