ˈhistrionize,v.rare—1. [f. as prec. + -ism.] intr. To act, as a stage-player; to play a part. (In quot., to histrionize it.) 1652Urquhart JewelWks. (1834) 229 During the five hours space that..he was pleased to histrionize it, he shewed himself so natural a representative that [etc.].