the great circle formed by the intersection of the plane of the earth's orbit with the celestial sphere; the apparent annual path of the sun in the heavens.
b.
an analogous great circle on a terrestrial globe.
2.
Astrology. the great circle of the ecliptic, along which are located the 12 houses and signs of the zodiac.
–adjective Also, e⋅clip⋅ti⋅cal.
3.
pertaining to an eclipse.
4.
pertaining to the ecliptic.
Origin: 1350–1400; ME < ML eclīptica, fem. of eclīpticus < Gk ekleiptikós, equiv. to ekleíp(ein) (see eclipse) + -tikos-tic
[i-klip-tik] 
tɪk