v. t. [ imp. & p. p. Inspissated p. pr. & vb. n. Inspissating ] [ L. inspissatus, p. p. of inspissare to thicken; pref. in- + spissare to thicken, fr. spissus thick. ] To thicken or bring to greater consistence, as fluids by evaporation. [ 1913 Webster ]