Search the Dictionary

l of coal tar. It is the type and basis of a large number of derivatives among organic compounds. Formerly called also naphthaline. Naphthalene red (Chem.), a dyestuff obtained from certain diazo derivatives of naphthylamine, and called also magdala red. -- Naphthalene yellow (Chem.), a yellow dyestuff obtained from c…

A compound of naphthalene or its radical with a metallic element; as, mercuric naphthide.

tantaneous or momentary state of an uncombined atom or radical just separated from one compound acid, and not yet united with another, -- a hypothetical condition implying peculiarly active chemical properties; as, hydrogen in the nascent state is a strong reducer.

nce, mercantile business; trading. [Obs.] Who had lost, with these prizes, forty thousand pounds, after twenty years' negotiation in the East Indies. Evelyn.

Lamarckism as revived, modified, and expounded by recent biologists, esp. as maintaining that the offspring inherits characters acquired by the parent from change of environment, use or disuse of parts, etc.; -- opposed of Neo-Darwinism (which see, above). -- Ne`o-La*marck"i*an, a. & n.

; unable to turn red litmus blue or blue litmus red; -- said of certain salts or other compounds. Contrasted with Ant: acid, and Ant: alkaline. Neutral axis, Neutral surface (Mech.), that line or plane, in a beam under transverse pressure, at which the fibers are neither stretched nor compressed, or where the longitudi…

rocess by which an acid and a base are combined in such proportions that the resulting compound is neutral. See Neutral, a., 4.

ophy, the philosophy of Sir Isaac Newton; -- applied to the doctrine of the universe as expounded in Newton's "Principia," to the modern or experimental philosophy (as opposed to the theories of Descartes and others), and, most frequently, to the mathematical theory of universal gravitation. -- Newtonian telescope (As…

Pertaining to, or containing, nickel; specifically, designating compounds in which, as contrasted with the nickelous compounds, the metal has a higher valence; as nickelic oxide.

Of, pertaining to, or designating, those compounds of nickel in which, as contrasted with the nickelic compounds, the metal has a lower valence; as, nickelous oxide. Frankland.

Combined, or impregnated, with nitric acid, or some of its compounds.

Of, pertaining to, or containing, nitrogen; specifically, designating any one of those compounds in which, as contrasted with nitrous compounds, the element has a higher valence; as, nitric oxide; nitric acid. Nitric acid, a colorless or yellowish liquid obtained by distilling a nitrate with sulphuric acid. It is power…

A binary compound of nitrogen with a more metallic element or radical; as, boric nitride.

The act, process, or result of combining with nitrogen or some of its compounds.

Any one of a series of cyanogen compounds; particularly, one of those cyanides of alcohol radicals which, by boiling with acids or alkalies, produce a carboxyl acid, with the elimination of the nitrogen as ammonia.

A combining form (used also adjectively) designating certain compounds of nitrogen or of its acids, as nitrohydrochloric, nitrocalcite; also, designating the group or radical NO2, or its compounds, as nitrobenzene. Nitro group, the radical NO2; -- called also nitroxyl.

life (hence the name azote still used by French chemists); but it forms many important compounds, as ammonia, nitric acid, the cyanides, etc, and is a constituent of all organized living tissues, animal or vegetable. Symbol N. Atomic weight 14. It was formerly regarded as a permanent noncondensible gas, but was liquefi…

To combine, or impregnate, with nitrogen or its compounds.

of, pertaining to, or resembling, nitrogen; as, a nitrogenous principle; nitrogenous compounds. Nitrogenous foods. See 2d Note under Food, n., 1.

An apparatus for determining the amount of nitrogen or some of its compounds in any substance subjected to analysis; an azotometer.