periapsis

Từ điển Oxford Learners Wordfinder Dictionary

noun

(astronomy) the point in an orbit closest to the body being orbited
• Syn:
point of periapsis
• Ant:
point of apoapsis (for: point of periapsis), apoapsis
• Topics:
astronomy, uranology
• Hypernyms:
celestial point
• Hyponyms:
perigee, perihelion, perijove, periselene, perilune
• Part Holonyms:
orbit, celestial orbit