The Collaborative International Dictionary
Incrassate \In*cras"sate\, 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.
Acids dissolve or attenuate; alkalies precipitate or
incrassate.
--Sir I.
Newton.
Liquors which time hath incrassated into jellies.
--Sir
T. Browne.
Incrassate \In*cras"sate\, Incrassated \In*cras"sa*ted\, a. [L. incrassatus, p. p.]
Made thick or thicker; thickened; inspissated.
(Bot.) Thickened; becoming thicker.
--Martyn.(Zo["o]l.) Swelled out on some particular part, as the antenn[ae] of certain insects.
Wiktionary
vb. (en-past of: incrassate)