de·spu·mate [ déspyə màyt, di spy màyt ](past and past participlede·spu·mated, present participlede·spu·mat·ing, 3rd person present singularde·spu·mates)
verb
Definition:
1. intransitive verb form froth: to form froth or scum on the surface
2. transitive verb remove froth or scum: to remove the scum or froth on the surface of a liquid
[Mid-17th century. < Latin despumat-, past participle of despumare "skim off (scum)" < spuma "foam, scum"]