粉末|ふんまつfunmatsu[0]heiban (flat)

1. no-adjectivefine powder
   アルミニウム、マグネシウム、シリコンなどの粉末ふんまつが爆発ばくはつする。↗

   Powders of aluminium, magnesium, silicon, etc. explode.

• SynonymパウダーNeutralLoanword for powdery substances (「ベビーパウダー」「パウダースノー」), typical of cosmetics and food; 「粉末」 sounds more formal.
• Synonym粉こなNeutralThe everyday native word for powder (「小麦粉」「粉ミルク」); the most common choice in speech, where 「粉末」 would sound stiff.
• Related粉体ふんたいNeutralTechnical noun for powder as a collection of fine solid particles (「粉体工学」); used mainly in engineering and industrial writing.
• Antonym塊かたまりNeutralA lump or solid mass (「肉の塊」); the direct opposite of finely divided 「粉末」.

Use 「粉末」 for fine powder in neutral-to-formal contexts (「粉末ジュース」「粉末状」); it leans formal. In casual speech say 「粉」, and 「パウダー」 for cosmetics and food. The opposite is 「塊」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 固体こたいを粉こなの状態じょうたいにしたもの。パウダー。