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