Beginning; starting; noting the initial point or step: as, an inceptive proposition; an inceptive verb (one that expresses the beginning of action).In mathematics, serving to initiate or produce: applied to such moments or first principles as, though of no magnitude themselves, are yet capable of producing results which are: thus, a point is inceptive of a line; a line, of a surface; and a surface, of a solid.n. That which begins or notes beginning, as a proposition or a verb. Also inchoative.