Definition of “antibiotic” - English Dictionary

british dictionary

“antibiotic” in British English

See all translations

antibioticnoun [ C ]

uk /ˌæn.ti.baɪˈɒt.ɪk/ us /ˌæn.t̬i.baɪˈɑː.t̬ɪk/

C2 a medicine or chemical that can destroy harmful bacteria in the body or limit their growth:

I'm taking antibiotics for a throat infection.
a one-month course of antibiotics
Some types of antibiotic are used to promote growth in farm animals.
He's on antibiotics for an ear infection.

More examples

  • My doctor's put me on a course of antibiotics and I have to stay off work for a week.
  • Bacteria are becoming resistant to antibiotics.
  • The drugs company are trying to develop a new type of antibiotic.
  • In those days doctors gave out antibiotics to patients all the time, so they became less effective.
  • The first antibiotic to be discovered was penicillin.

(Definition of “antibiotic” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“antibiotic” in American English

See all translations

antibioticnoun [ C ]

us /ˌænt·i·bɑɪˈɑt̬·ɪk, ˌæn·tɑɪ-/

a medicine or chemical that can destroy harmful bacteria in the body or limit their growth:

I’m taking an antibiotic for a throat infection.

(Definition of “antibiotic” from the Cambridge Academic Content Dictionary © Cambridge University Press)