The word antibiotic comes from Latin, meaning “against life”, but in common use it means a medicine that is given to treat a bacterial infection. There are some other related words:
Antibacterial: a medicine that treats bacterial infections (kind of a synonym for antibiotic, but more specific)
Antimicrobial: a medicine that works against microbes, which could include fungus and bacteria
Antifungal: a medicine to treat fungal infections
Antiviral: a medicine against viruses
Antiseptic: a wipe or cream applied to cuts to stop infections from happening
Biocide: usually a type of cleaner that kills bacteria on surfaces, but is not meant to be used on humans
An antibiotic is something, usually a drug, which is capable of killing bacteria. Antibiotics can be tablets or liquids which you have to swallow or they can be given to you through an injection or a drip if you’re in hospital.
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