Kumi logo
Kumi

Learn Japanese. Where understanding folds into fluency.

Dictionary

KanjiKanji vocabularyKana vocabularyKanaRadicalsGrammarJLPT N5

Learn

GuidesData reportsStart where you areWhat is KMT?RoadmapFAQ

Connect

EmailDiscordInstagramThreadsTikTokYouTubeLinkedInBlueskyX

Newsletter

Start learning free →

Free forever tier. No card required.

© 2026 Kumiai Inc. All rights reserved.

AboutFAQContactStatusPrivacyTermsAttributions
    Dictionary
    1. Dictionary
    2. Kanji Vocab
    3. 有理数

    有理数

    有ゆう理り数すう

    rational number

    NTNounScience & MathKanji Vocab30 strokes

    ゆうりすう

    Noun

    1.
    rational number
    mathematics

    Stroke 0 / 30

    Speed1.0x

    Kanji that make up this word

    有
    あ.る…(9)
    possess・have・exist・happen・occur…(1)
    理
    ことわり…(17)
    logic・arrangement・reason・justice・truth
    数
    かず・かぞ.える・しばしば・せ.める・わずらわ.しい…(6)
    number・strength・fate・law・figures
    Kumi logo

    Track your mastery

    Kumi's KMT system tracks your mastery across kanji, vocabulary, grammar, and reading. Create a free account to use it on 220,000+ concepts.

    Related concepts for this entry

    Used in vocabulary

    • 有
    • 理
    • 数

    Explore more

    Kanji Vocab dictionary›Browse all entries›