inspissate

Etymology
Formed from, the perfect passive participle of.

Verb

 * 1)  To thicken a fluid, in the sense of making it more viscous, especially by boiling, evaporation, or condensation; to condense.
 * 2)  Of a fluid: to become more viscous.
 * 1)  Of a fluid: to become more viscous.

Synonyms

 * ; see also Thesaurus:thicken