Phrase guide

rational number

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

A number that can be expressed as the ratio of two integers.

Definition source: English Wiktionary via Wiktextract

Topics: mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

an integer or a fraction

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: rational

Antonyms: none provided

Broader terms: real number, real

Narrower terms: fraction

History

Etymology

From rational + number, ultimately from Latin rationalis + numerus. Compare analogous logarithm, from Ancient Greek.

Across languages

Translations

35 source translations are retained for this English entry.

  • Afrikaans: rasionale getal — quotient of integers
  • Armenian: ռացիոնալ թիվ (ṙacʻional tʻiv) — quotient of integers
  • Bulgarian: рациона́лно число́ (racionálno čisló) — quotient of integers
  • Catalan: nombre racional — quotient of integers
  • Chinese Mandarin: 有理數 /有理数 (yǒulǐshù) — quotient of integers
  • Czech: racionální číslo — quotient of integers
  • Danish: rationelt tal — quotient of integers
  • Dutch: rationaal getal — quotient of integers
  • Esperanto: racionala nombro — quotient of integers
  • Finnish: rationaaliluku — quotient of integers
  • French: nombre rationnel — quotient of integers
  • German: rationale Zahl — quotient of integers
  • Greek: ρητός αριθμός (ritós arithmós) — quotient of integers
  • Hindi: परिमेय संख्या (parimey saṅkhyā) — quotient of integers
  • Hungarian: racionális szám — quotient of integers
  • Icelandic: ræð tala — quotient of integers
  • Italian: numero razionale — quotient of integers
  • Japanese: 有理数 (yūrisū) — quotient of integers
  • Kazakh: рационал сан (rasional san) — quotient of integers
  • Korean: 유리수 (yurisu) — quotient of integers
  • Latin: numerus rationalis — quotient of integers
  • Macedonian: рациона́лен број (racionálen broj) — quotient of integers
  • Māori: tauwehe whakahau — quotient of integers
  • Norwegian: rasjonalt tall — quotient of integers
  • Polish: liczba wymierna — quotient of integers
  • Portuguese: número racional — quotient of integers
  • Romanian: număr rațional — quotient of integers
  • Russian: рациона́льное число́ (racionálʹnoje čisló) — quotient of integers
  • Serbo-Croatian: рaционaлни број — quotient of integers
  • Serbo-Croatian: racionalni broj — quotient of integers
  • Spanish: número racional — quotient of integers
  • Swedish: rationellt tal — quotient of integers
  • Tagalog: bilang na tagwayin — quotient of integers
  • Turkish: rasyonel sayı — quotient of integers
  • Vietnamese: số hữu tỉ — quotient of integers