Last Updated
：2026/01/04
円周率
Hiragana
えんしゅうりつ
Noun
Japanese Meaning
円周率とは、円の円周の長さと直径の長さの比率を表す数学定数で、一般に記号πで表される。
Easy Japanese Meaning
まるのまわりのながさをまんなかのまっすぐのながさでわったすうじ
Chinese (Simplified) Meaning
圆周率 / 圆的周长与直径之比 / 数学常数π
Chinese (Traditional) Meaning
圓的周長與直徑之比 / 數學常數π / 約為3.14159的常數
Korean Meaning
원주율 / 원의 둘레와 지름의 비 / 파이
Vietnamese Meaning
số Pi (π) / tỉ số giữa chu vi và đường kính của đường tròn / hằng số toán học xấp xỉ 3,14159
Tagalog Meaning
pi; π / konstanteng rasyo ng palibot ng bilog sa diyametro / tinatayang 3.14159
Sense（1）
(mathematics) pi
（ canonical ）
（ romanization ）
（ romanization ）
（ hiragana historical ）
（ hiragana ）
Quizzes for review
See correct answer
Pi is approximately 3.14.
See correct answer
円周率は約3.14です。
Japanese - English
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