Definition of ampicillin in English:



mass nounMedicine
  • A semi-synthetic form of penicillin used to treat infections of the urinary and respiratory tracts.

    • ‘If you are given treatment for a bacterial infection with the antibiotics ampicillin or amoxycillin, you may develop a rash of small red spots.’
    • ‘The liver is also actively involved in detoxifying and excreting into the bile many different drugs, including sulfonamides, penicillin, ampicillin and erythromycin to name a few.’
    • ‘A pink rash can occur all over the body in children who have been treated with ampicillin or amoxicillin.’
    • ‘The patients had been treated with ampicillin, penicillin, or chloramphenicol.’
    • ‘For urinary tract infection, we examined resistance to ampicillin or amoxicillin and trimethoprim.’


1960s: blend of amino and a contraction of penicillin.