Occasive

Oc`ca´sive


a.1.Of or pertaining to the setting sun; falling; descending; western.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
It is an ortive azimuth when the celestial body is rising (in the east), and an occiduous (or occasive) azimuth when the celestial body is setting (in the west).