Tra từ equinoctial circle - Từ điển Oxford Learners Wordfinder Dictionary

Từ điển Oxford Learners Wordfinder Dictionary

equinoctial circle

noun

the great circle on the celestial sphere midway between the celestial poles
• Syn:
celestial equator, equinoctial line, equinoctial
• Derivationally related forms:
equinoctial (for: equinoctial)
• Hypernyms:
great circle