\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.

\In*cras"sate\, v. i.
To become thick or thicker.

\In*cras"sate\, Incrassated \In*cras"sa*ted\, a. [L.
incrassatus, p. p.]
1. Made thick or thicker; thickened; inspissated.

2. (Bot.) Thickened; becoming thicker. --Martyn.

3. (Zo["o]l.) Swelled out on some particular part, as the
   antenn[ae] of certain insects.