Medical Dictionary

benzalkonium chloride

noun benz·al·ko·ni·um chloride \ ˌben-zal-ˌkō-nē-əm- \

medical Definition of benzalkonium chloride

: a white or yellowish white mixture of chloride salts obtained as a bitter aromatic powder or gelatinous pieces that is used as an antiseptic and germicide — see zephiran

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