Last Updated
：2025/12/07
第四紀
Hiragana
だいしき / だいよんき
Proper noun
Japanese Meaning
地質時代の区分の一つで、現在を含む最も新しい時代。およそ約258万年前から現在までの期間を指し、人類の進化や氷期・間氷期の繰り返しが特徴。
Easy Japanese Meaning
地質学でつかうことばで、いまふくむ一番あたらしい時代の長い期間の名前
Sense（1）
the Quaternary period
（ canonical ）
（ canonical ）
（ romanization ）
（ romanization ）
（ hiragana ）
Quizzes for review
See correct answer
第四紀
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The Quaternary is the most recent era in Earth's history.
The Quaternary is the most recent era in Earth's history.
See correct answer
第四紀は地球の歴史の中で最も新しい時代です。
Japanese - English
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