Word
Kana: せいぶん Romaji: seibun Level: N2

成分

Meaning in English

ingredient, component, composition

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What it means

成分 means the ingredients or components that form a whole; it refers to the constituent substances that compose a product, substance, or mixture.

Main meanings

  • Ingredient or component of a product, such as foods, cosmetics, or medicines
  • Constituent substance in chemistry or materials, describing the makeup of a compound or material
  • Part of a whole in a broader sense, including nutritional or chemical composition

How to use it

Used in formal and everyday language to refer to what something is made of; common in labeling and documentation such as 食品の成分, 成分表示, 医薬品の成分, 化粧品の成分; typical constructions include 食品の成分, この製品の成分, 成分として.

Variants and close terms

  • 構成要素 (kōsei yōso) — constituent element
  • 要素 (ようそ, youso) — element; component
  • 成分表 (せいぶんひょう, seibunhyō) — ingredient list

Composition

  • 成: to become, to reach a state
  • 分: part, portion, division
  • Combined they express the idea of the parts that make up a whole

Etymology

成 sei and 分 bun, on'yomi forming a compound; the combination expresses the idea of a thing's make-up or components.

Word class

Noun (名詞)

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