Word
Kana: わりあい Romaji: wariai Level: N4

割合

Meaning in English

rate, ratio, percentage

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Dictionary

Word context

What it means

What does 割合 mean? It denotes the share of a part relative to a whole, expressed as a proportion, a ratio, or a percentage; the core idea is comparing a part to the total to describe relative size in quantitative terms.

Main meanings

  • Proportion, ratio, or percentage—the part of a whole relative to the total, used in math, statistics, and everyday discussion.
  • Relative share in data, such as demographic or economic breakdowns, presented as a fraction or percent.
  • Figurative use indicating degree or extent (割合に) meaning 'to a considerable extent' or 'to a noticeable degree'.

How to use it

Primarily a noun used in formal and technical contexts like statistics, economics, education, and journalism; common expressions include 割合が高い/低い and 割合を占める, with 実際の割合 referring to measured shares in data sets.

Variants and close terms

  • 比率 (ひりつ) — ratio
  • パーセント (pa-sento) — percent

Composition

  • 割 = to divide; portion; share
  • 合 = to fit; join; total

Etymology

割 (kun: wari) to divide; 合 (kun: ai) to fit or join; together they form the compound wariai, reflecting a combined sense of parts relating to the whole.

Origin

Sino-Japanese coinage using two native kanji that together express the concept of a part relative to the whole; the compound gained widespread usage as a standard term in Japanese writing.

Word class

noun (名詞)

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