Home/JLPT null/Vocabulary/海王星海王星🔊☆ Save to listかいおうせいMeaning—Kanji in this word海王星Example sentences海王星は太陽系の8番目の惑星だ。Neptune is the eighth planet of the solar system.Related words新嘉坡衛星火星巨星暁星金星恒星黒星