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) A mixed salt of any polybasic acid which has been saturated by different bases or basic radicals, as the double carbonate of sodium and potassium, NaKCO3.6H2O. (b) A molecular combination of two distinct salts, as common alum, which consists of the sulphate of aluminium, and the sulphate of potassium or ammonium. --…

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

A combining unit, whether an atom, a radical, or a molecule; as, in acid salt two or more equivalents of acid unite with one or more equivalents of base. Mechanical equivalent of heat (Physics), the number of units of work which the unit of heat can perform; the mechanical energy which must be expended to raise the tem…

A medicine that effects a radical cure. Whitlock.

An ethereal salt, or compound ether, consisting of an organic radical united with the residue of any oxygen acid, organic or inorganic; thus the natural fats are esters of glycerin and the fatty acids, oleic, etc.

A trivalent hydrocarbon radical, CH3.C.

Any similar oxide of hydrocarbon radicals; as, amyl ether; valeric ether. Complex ether, Mixed ether (Chem.), an oxide of two different radicals in the same molecule; as, ethyl methyl ether, C2H5.O.CH3. -- Compound ether (Chem.), an ethereal salt or a salt of some hydrocarbon as the base; an ester. -- Ether engine (M…

from oil of wine, or oenanthic ether). -- Ethereal salt (Chem.), a salt of some organic radical as a base; an ester.

A monatomic, hydrocarbon radical, C2H5 of the paraffin series, forming the essential radical of ethane, and of common alcohol and ether. Ethyl aldehyde. (Chem.) See Aldehyde.

An unsymmetrical, divalent, hydrocarbon radical, C2H4 metameric with ethylene but written thus, CH3.CH to distinguish it from the symmetrical ethylene, CH2.CH2. Its compounds are derived from aldehyde. Formerly called also ethidene.

Radical; ultra; as, extreme opinions. The Puritans or extreme Protestants. Gladstone.

A binary compound of fluorine with another element or radical. Calcium fluoride (Min.), fluorite, CaF2. See Fluorite.

A double fluoride of silicon and some other (usually basic) element or radical, regarded as a salt of fluosilicic acid; -- called also silicofluoride.

A moral weakness; a failing; a weak point; a frailty. A disposition radically noble and generous, clouded and overshadowed by superficial foibles. De Quincey.

Serving to form; derivative; not radical; as, a termination merely formative.

A univalent radical, H.C:O, regarded as the essential residue of formic acid and aldehyde.

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 authorized. [Eng.] Bouvier. -…

Primarily; originally; essentially; radically; at the foundation; in origin or constituents. "Fundamentally defective." Burke.

A compound radical, C3H5, regarded as the essential radical of glycerin. It is metameric with allyl. Called also propenyl.

A divalent, compound radical, CO.CH2, regarded as the essential radical of glycolic acid, and a large series of related compounds.