ecliptic

詳細解釋：

e.clip.tic

n.（名詞）
The intersection plane of the earth`s orbit with the celestial sphere, along which the sun appears to move as viewed from the earth.
黃道：地球運行軌道與天球的交界面，在地球上看，太陽似乎沿著黃道運行
A great circle inscribed on a terrestrial globe inclined at an approximate angle of 23=27&S{￠} to the equator and representing the apparent motion of the sun in relation to the earth during a year.
黃道線：地球儀上刻著的大圈，與赤道平面大致成23=27&S{￠}的角，代表一年中太陽相對於地球的表象運動

來源：
Middle English ecliptik
中古英文 ecliptik
from Medieval Latin (lonea) ecloptica [ecliptic (line)]
源自 中世紀拉丁語 (lonea) ecloptica [黃道線]
from Latin eclopticus [of an eclipse]
源自 拉丁語 eclopticus [食的]
from Greek ekleiptikos
源自 希臘語 ekleiptikos
from ekleipein [to fail to appear] * see eclipse
源自 ekleipein [不能出現] *參見 eclipse