Last Updated
：2025/12/07
げんせいだい
Kanji
原生代
Proper noun
Japanese Meaning
地質時代区分の一つ。先カンブリア時代の後半にあたる。「原生代」とも書く。 / 生命の初期進化が進んだ時代で、多細胞生物や真核生物が出現した時期を含む。
Easy Japanese Meaning
およそ二十五おくねんから五おくねんくらいまえの古いちきゅうのじだいのなまえ
Sense（1）
原生代: the Proterozoic eon
（ romanization ）
Quizzes for review
See correct answer
げんせいだい
See correct answer
The Proterozoic eon is the longest era in the history of the Earth.
The Proterozoic eon is the longest era in the history of the Earth.
See correct answer
げんせいだいは地球の歴史の中で最も長い時代です。
Japanese - English
Word Edit Setting
- Users who have edit permission for words - All Users
- Screen new word creation
- Screen word edits
- Screen word deletion
- Screen changing entry name
- Users authorized to vote on judging - All Users
- Number of votes required for decision - 1
Sentence Edit Setting
- Users who have edit permission for sentences - All Users
- Screen sentence deletion
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Quiz Edit Setting
- Users who have edit permission for quizzes - All Users
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
