Last Updated
:2025/12/07
冥王代
Hiragana
めいおうだい
Proper noun
Japanese Meaning
地球の最初期の地質時代区分である「冥王代(Hadean)」を指す固有名詞。およそ46億年前の地球誕生から約40億年前までの時代を指し、地殻が形成されつつあり、隕石衝突が多発し、生命の痕跡はほとんど確認されていないとされる。
Easy Japanese Meaning
ちきゅうがうまれてすぐの、とてもふるいじだいのなまえ。まだいきものがほとんどいなかったとき。
Sense(1)
the Hadean eon
( canonical )
( romanization )
( romanization )
( hiragana historical )
( hiragana )
Quizzes for review
See correct answer
The Hadean eon is considered the first era of Earth, lasting from about 4.6 billion years ago to 4 billion years ago.
The Hadean eon is considered the first era of Earth, lasting from about 4.6 billion years ago to 4 billion years ago.
See correct answer
冥王代は地球の最初の時代で、約46億年前から40億年前まで続いたとされています。
Japanese - English
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