v. t. [ imp. & p. p. Incrassated p. pr. & vb. n. Incrassating. ] [ L. incrassatus, p. p. of incrassare; pref. in- in + crassus thick. ] To make thick or thicker; to thicken; especially, in pharmacy, to thicken (a liquid) by the mixture of another substance, or by evaporating the thinner parts. [ 1913 Webster ]

Acids dissolve or attenuate; alkalies precipitate or incrassate. Sir I. Newton. [ 1913 Webster ]

Liquors which time hath incrassated into jellies. Sir T. Browne. [ 1913 Webster ]

v. i. To become thick or thicker.

{ } a. [ L. incrassatus, p. p. ] [ 1913 Webster ]

1. Made thick or thicker; thickened; inspissated. [ 1913 Webster ]

2. (Bot.) Thickened; becoming thicker. Martyn. [ 1913 Webster ]

3. (Zool.) Swelled out on some particular part, as the antennæ of certain insects. [ 1913 Webster ]