EQUIVALENT n.
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…
ETHER n.
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 (Mach.), a condensing engine like a steam engine, but operated by the…
FALSE a.
ct or interrupted cadence. -- False conception (Med.), an abnormal conception in which a mole, or misshapen fleshy mass, is produced instead of a properly organized fetus. -- False croup (Med.), a spasmodic affection of the larynx attended with the symptoms of membranous croup, but unassociated with the deposit of a…
GOLDEN a.
ficiency without excess; moderation. Angels guard him in the golden mean. Pope. -- Golden mole (Zoöl), one of several South African Insectivora of the family Chrysochloridæ, resembling moles in form and habits. The fur is tinted with green, purple, and gold. -- Golden number (Chronol.), a number showing the year of th…
HEPTANE n.
H16, of the paraffin series (nine are possible, four are known); -- so called because the molecule has seven carbon atoms. Specifically, a colorless liquid, found as a constituent of petroleum, in the tar oil of cannel coal, etc.