I. i-ˈklip-tik adjective
Etymology: Middle English ecliptik, from Late Latin ecliptica linea, literally, line of eclipses
Date: 14th century
: of or relating to the ecliptic or an eclipse
II. noun
Date: 15th century
: the great circle of the celestial sphere that is the apparent path of the sun among the stars or of the earth as seen from the sun : the plane of the earth's orbit extended to meet the celestial sphere