noun which may take the genitive case particle 'no'
Describes something based on reason or logic, often used in formal or academic contexts. Commonly appears in compounds like 有理的 (rational) or 有理数 (rational number).
彼の主張は有理だと思う。
I think his argument is rational.
noun which may take the genitive case particle 'no'
Mathematics term. Used in phrases like 有理数 (rational number) and 有理関数 (rational function).
有理数は分数で表せる数です。
Rational numbers are numbers that can be expressed as fractions.
有理的な判断が求められる。
A rational judgment is required.
birational
rationalization
rational expression
rational number
rational function
From Chinese 有理 (yǒulǐ), meaning 'to have reason' or 'reasonable'. The mathematical sense is a calque from Western mathematics.