English

Noun

first equinoctial colure ‎(uncountable)

1. (astronomy) An imaginary line from pole-to-pole on the celestial sphere where the sun crosses it on March equinox.

Coordinate terms

• second equinoctial colure
• equinoctial colure
• solstitial colure
• first solstitial colure
• second solstitial colure

See also

• first point of Aries