† ˈhumidate,v.Obs. [f. L. hūmidāt-, ppl. stem of hūmidāre, f.hūmidus humid.] trans. To make humid or moist; to moisten. c1540Boorde The Boke for to Lerne C iij b, Immoderat slepe and sluggyshnes doth humi[d]ate and make lyght the brayne.1656Blount Glossogr., Humidate, to moisten.