Last Updated
：2026/01/04
無理数
Hiragana
むりすう
Noun
Japanese Meaning
分数で表すことができない実数。円周率πや平方根2など。 / 道理や筋が通らないこと。理不尽なこと。※『無理数』の語とは直接関係しない一般語『無理』由来の意味。
Easy Japanese Meaning
ぶんすうであらわせないすう。しょうすうがずっとつづき、くりかえさない。
Chinese (Simplified) Meaning
不能表示为两个整数之比的数 / 小数表示为无限不循环的数
Chinese (Traditional) Meaning
不能表示為兩個整數之比的數 / 小數表示為無限不循環的數
Korean Meaning
분수로 나타낼 수 없는 수 / 유리수로 표현할 수 없는 실수 / 소숫점 이하가 무한히 비순환하는 수
Vietnamese Meaning
số vô tỉ / số không thể biểu diễn dưới dạng phân số của hai số nguyên / số có biểu diễn thập phân vô hạn không tuần hoàn
Tagalog Meaning
bilang na hindi maipapahayag bilang praksiyon ng dalawang buumbilang / desimal na hindi nagtatapos at hindi nauulit
Sense（1）
an irrational number
（ canonical ）
（ romanization ）
（ hiragana ）
Quizzes for review
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無理数
See correct answer
An irrational number is a number that cannot be expressed as a fraction.
An irrational number is a number that cannot be expressed as a fraction.
See correct answer
無理数は、分数で表すことができない数です。
Japanese - English
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