OR'TIVE, adjective [Latin ortivus, from ortus, orior, to rise.] Rising, or eastern. The ortive amplitude of a planet is an arc of the horizon intercepted between the point where a star rises, and the east point of the horizon, the point where the horizon and equator intersect.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI