† abˈstrusive,a.Obs.rare—1. [ad. assumed L. *abstrūsīvus, f.abstrūs-ŭs: see -ive.] Of abstruse quality or tendency; abstruse, recondite. 1655–60T. Stanley Hist. of Philos. (1701) 65/2 Pericles could easily reduce the exercise of his mind from secret abstrusive things to publick popular causes.