INCEP'TIVE, adjective [Latin inceptivus, from incipio, to begin.] Beginning; noting beginning; as an inceptive proposition; an inceptive verb, which expresses the beginning of action. A point is inceptive of a line, and a line is inceptive of a surface.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI