outer planet

Từ điển Oxford Learners Wordfinder Dictionary

noun

(astronomy) a major planet whose orbit is outside the asteroid belt (Jupiter, Saturn, Uranus, Neptune, Pluto)
• Topics:
astronomy, uranology
• Hypernyms:
planet, major planet
• Instance Hyponyms:
Jupiter, Neptune, Pluto, Saturn, Uranus
• Member Holonyms:
solar system