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A Writer's Dictionary:

antibiotic Definition


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antibiotic
noun
    1. A substance, produced or derived from a micro-organism, that can selectively destroy or inhibit other bacteria or fungi without damaging the host, eg penicillin, widely used in the treatment of bacterial infections.
adj
    1. Having the property of or relating to antibiotics.
Etymology: 1940s in this sense; 19c, meaning ‘injurious to life'.



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