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orms of the same substance, or of different substances having the same composition; as, xylene has three metamers, viz., orthoxylene, metaxylene, and paraxylene.

See Methylene.

A broad, thin, silvery marine fish (Selene vomer); -- called also lookdown, and silver moonfish.

To contract mold; to grow moldy; to mold. [Obs.] Let us not moulen thus in idleness. Chaucer.

Movableness.

eration, either in form, state, or essential character; susceptibility of change; changeableness; inconstancy; variation. Plato confessed that the heavens and the frame of the world are corporeal, and therefore subject to mutability. Stillingfleet.

Pertaining to , or derived from, naphthalene; -- used specifically to designate a yellow crystalline substance, called naphthalenic acid and also hydroxy quinone, and obtained from certain derivatives of naphthol.

Pertaining to, derived from, or related to, naphthalene; -- used specifically to denote any one of a series of acids derived from naphthalene, and called naphthalene acids.

See Naphthalene.

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

Pertaining to, derived from, or related to, naphthalene; -- used specifically to designate any one of a series of carboxyl derivatives, called naphthoic acids.

Any one of a series of hydroxyl derivatives of naphthalene, analogous to phenol. In general they are crystalline substances with a phenol (carbolic) odor. Naphthol blue, Naphthol orange, Naphthol yellow (Chem.), brilliant dyestuffs produced from certain complex nitrogenous derivatives of naphthol or naphthoquinone.…

yellow crystalline substance, C10H6O2, analogous to quinone, obtained by oxidizing naphthalene with chromic acid.

A hydrocarbon radical regarded as the essential residue of naphthalene.

One of two basic amido derivatives of naphthalene, C10H7.NH2, forming crystalline solids.

The quality or condition of being navigable; navigableness.

The quality or state of being necessary, unavoidable, or absolutely requisite; inevitableness; indispensableness.

Nimbleness. [Obs.] Spenser.

Any one of several metameric unsaturated hydrocarbons (C9H14) of the valylene series.

Of, pertaining to, related to, or designating, nonylene or its compounds; as, nonylenic acid.