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presented in graphic formulæ by a short line or dash. See Diagram of Benzene nucleus, and Valence. Arbitration bond. See under Arbitration. -- Bond crediter (Law), a creditor whose debt is secured by a bond. Blackstone. -- Bond debt (Law), a debt contracted under the obligation of a bond. Burrows. -- Bond (or lap) o…

or containing, bromine; -- said of those compounds of bromine in which this element has a valence of five, or the next to its highest; as, bromic acid.

cholera, a contagious disease of fowls; - - so called because first studied during the prevalence of a cholera epidemic in France. It has no resemblance to true cholera.

tained from, chlorine; -- said of those compounds of chlorine in which this element has a valence of five, or the next to its highest; as, chloric acid, HClO3. Chloric ether (Chem.), ethylene dichloride. See Dutch liquid, under Dutch.

erived from, chlorine; -- said of those compounds of chlorine in which this element has a valence of three, the next lower than in chloric compounds; as, chlorous acid, HClO2.

obtained from, chromium; -- said of the compounds of chromium in which it has its higher valence. Chromic acid, an acid, H2CrO4, analogous to sulphuric acid, not readily obtained in the free state, but forming well known salts, many of which are colored pigments, as chrome yellow, chrome red, etc. -- Chromic anhydrid…

Of, pertaining to, or derived from, chromium, when this element has a valence lower than that in chromic compounds. Chromous acid, a bluish gray powder, CrO.OH, of weak acid properties and regard as an acid.

, or containing, cobalt; -- said especially of those compounds in which cobalt has higher valence; as, cobaltic oxide. Luteo-cobaltic compounds (Chem.), an extensive series of complex yellow compounds of ammonia and cobaltic salts. -- Roseo-cobaltic compounds (Chem.), an extensive series of complex red compounds of co…

or containing, cobalt; -- said esp. of cobalt compounds in which the metal has its lower valence. Cobaltous chloride, a crystalline compound, CoCl2, of a pale rose color when hydrous, blue when dehydrated. Its solution is used for a sympathetic ink, the writing being nearly colorless when dried in the air, owing to ab…

Having two units of combining power; bivalent. Cf. Valence.

An element, atom, or radical having a valence or combining power of two.

A division of time characterized by the prevalence of similar conditions of the earth; commonly a minor division or part of a period. The long geological epoch which stored up the vast coal measures. J. C. Shairp.

Same as Equivalence.

To make the equivalent to; to equal; equivalence. [R.]

ontaining iron. Specifically (Chem.), denoting those compounds in which iron has a higher valence than in the ferrous compounds; as, ferric oxide; ferric acid. Ferric acid (Chem.), an acid, H2FeO4, which is not known in the free state, but forms definite salts, analogous to the chromates and sulphates. -- Ferric oxide…

rived from, iron; -- especially used of compounds of iron in which the iron has its lower valence; as, ferrous sulphate.

unwale. -- Free bond (Chem.), an unsaturated or unemployed unit, or bond, of affinity or valence, of an atom or radical. -- Free-borough men (O.Eng. Law). See Friborg. -- Free chapel (Eccles.), a chapel not subject to the jurisdiction of the ordinary, having been founded by the king or by a subject specially authori…

ase in size, number, frequency, strength, etc.; augmentation; advancement; production; prevalence or influence; as, the growth of trade; the growth of power; the growth of intemperance. Idle weeds are fast in growth. Shak.

An atom which has a valence of seven, and which can be theoretically combined with, substituted for, or replaced by, seven monad atoms or radicals; as, iodine is a heptad in iodic acid. Also used as an adjective.

An atom whose valence is six, and which can be theoretically combined with, substituted for, or replaced by, six monad atoms or radicals; as, sulphur is a hexad in sulphuric acid. Also used as an adjective.