Definition of merbromin in US English:

merbromin

noun

  • A greenish iridescent crystalline compound which dissolves in water to give a red solution used as an antiseptic. It is a fluorescein derivative containing bromine and mercury.

    • ‘Mercurochrome is the trade name of merbromin antiseptic tinctures made of merbromin and alcohol or water (usually 2% merbromin to 98% alcohol or water).’
    • ‘Although more effective than merbromin, thimerosal shares the disadvantage of poor tissue penetration and tissue fixation and therefore has limited bacteriostatic activity.’
    • ‘In that final rule, the agency declared merbromin (and other mercury active ingredients) as not generally recognized as safe and effective as an active ingredient for OTC first aid antiseptic and antimicrobial diaper rash uses.’

Origin

1940s: from mercuric + bromo- + -in.

Pronunciation

merbromin

/ˌmərˈbrōmən/