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ion of metameric substances, or their respective derivatives, which are more or less interchangeable, according as one form or the other is the more stable. It is a special case of metamerism; thus, the lactam and the lactim compounds exhibit tautomerism.

and last, constituted a fourth. These extremes were immutable; the two middle sounds were changeable.

usy Uncandid Uncanonical Uncaptious Uncareful Uncelestial Unceremonious Unchallengeable Unchangeable Unchary Unchastisable Uncheerful

Unyielding in nature; unchangeable; fixed; -- applied to abstract ideas; as, unbending truths.

Not constant; inconstant; fickle; changeable. [Obs.] Shak. -- Un*con"stant*ly, adv. [Obs.] -- Un*con"stant*ness, n. [Obs.]

On; -- used in all the senses of that word, with which it is interchangeable. "Upon an hill of flowers." Chaucer. Our host upon his stirrups stood anon. Chaucer. Thou shalt take of the blood that is upon the altar. Ex. xxix. 21. The Philistines be upon thee, Samson. Judg. xvi. 9. As I did stand my watch upon the hill.…

ter to our wants and enjoyments, and may be universally made use of, without possessing exchangeable value. M'Culloch. Value is the power to command commodities generally. A. L. Chapin (Johnson's Cys.). Value is the generic term which expresses power in exchange. F. A. Walker. His design was not to pay him the value of…

Having the capacity of varying or changing; capable of alternation in any manner; changeable; as, variable winds or seasons; a variable quantity.

Changeable; changing; fickle. [Obs.] He is variant, he abit [abides] nowhere. Chaucer.

Changeable; uncertain; inconstant; variable. A man so various, that he seemed to be Not one, but all mankind's epitome. Dryden. The names of mixed modes . . . are very various. Locke.

Liable to be turned in opinion; changeable; variable; unsteady; inconstant; as versatile disposition.

Having various colors; changeable in color. "Versicolor, sweet- smelling flowers." Burton.

Fig.: Light-hearted; easily affected by circumstances; airy; lively; hence, changeable; fickle; as, a volatile temper. You are as giddy and volatile as ever. Swift. Volatile alkali. (Old Chem.) See under Alkali. -- Volatile liniment, a liniment composed of sweet oil and ammonia, so called from the readiness with which…

Quality or state of being volatile; disposition to evaporate; changeableness; fickleness.

Changeable; unstable; fickle. [Obs.]