† gruˈmescent,a.Obs.rare—1. [ad.mod.L. grūmescent-em, pres.pple. of grūmescĕre to form clots, to coagulate, f.grūmus grume.] Having a tendency to coagulate. 1684tr.Bonet's Merc. Compit. viii. 274 These Acids..coagulate a Bloud too fluid, and attenuate it, when grumescent.