antibiotic · noun C /ˌæn.tɪ.baɪˈɒ.tɪk/
antibiotic
C2 a medicine which cures infections by destroying harmful bacteria
Dictionary example:
He is on antibiotics for an ear infection.
Learner example:
Nevertheless, for all the side effects they may have, for all the unpleas[a]ntness of having a needle stuck in your arm or a spoonful of foul-tasting liquid stuck in your mouth, antibiotics and vaccines remain the greatest discovery in the history of the world. (Certificate of Proficiency in English; C2; Italian)