Effloresce

Definition of Effloresce

Ef`flo`resce´

v. i.	1.	To blossom forth. [imp. & p. p. Effloresced ; p. pr. & vb. n. Efflorescing .]
	2.	(Chem.) To change on the surface, or throughout, to a whitish, mealy, or crystalline powder, from a gradual decomposition, esp. from the loss of water, on simple exposure to the air; as, Glauber's salts, and many others, effloresce.
	3.	To become covered with a whitish crust or light crystallization, from a slow chemical change between some of the ingredients of the matter covered and an acid proceeding commonly from an external source; as, the walls of limestone caverns sometimes effloresce with nitrate of calcium in consequence of the action of nitric acid formed in the atmosphere.

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