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不純物 (fujunbutsu) Japanese meaning: impurity | Kotomora
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Kanji 純 genuine, purity, innocence Related words 不純物 refers specifically to an impurity mixed into a substance (e.g. a chemical or material), while 異物 is the broader term for any foreign object or substance that does not belong.
不純物 emphasizes the impurity itself that lowers purity, while 混ぜ物 focuses on the substance that has been mixed in.
Etymology Compound of 不純 (impure) + 物 (thing, substance). The exact historical derivation is uncertain, but the word follows a common Sino-Japanese pattern for technical terms.
