ecliptic
/ɪˈklɪptɪk/
noun
- The apparent path of the Sun across the sky over the course of a year, as seen from Earth.
- During an eclipse, the Moon crosses the ecliptic and blocks the Sun.
- The planets all move close to the ecliptic in the night sky.
- Astronomers use the ecliptic to map the positions of solar system objects.
adjective
- Relating to the ecliptic or the path of the Sun.
- The zodiac constellations lie along the ecliptic band.
- The ecliptic plane is tilted relative to Earth's equator.
- Ecliptic coordinates help astronomers track the movement of comets.