Definition of chlorhexidine
: an antibacterial compound C22H30Cl2N10 used as a local antiseptic (as in mouthwash) and disinfectant especially in the form of its hydrochloride, gluconate, or acetate
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Merriam-Webster unabridged
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Time Traveler for chlorhexidine
The first known use of chlorhexidine was in 1957
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