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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