Inspissate

Websters 1828 Dictionary
Inspissate INSPIS'SATE, v.t. [L. in and spissus, thick.] To thicken, as fluids; to bring to greater consistence by evaporating the thinner parts, etc.

WordNet (r) 2.1 (2005)
inspissate v 1: make viscous or dense; "thicken the sauce by adding flour" [syn: thicken, inspissate] 2: make thick or thicker; "Thicken the sauce"; "inspissate the tar so that it becomes pitch" [syn: thicken, inspissate] [ant: thin] 3: become thick or thicker; "The sauce thickened"; "The egg yolk will inspissate" [syn: thicken, inspissate] [ant: thin]