Definition of oxacillin in English:
 oxacillin
noun ˌɒksəˈsɪlɪnˌäksəˈsilin
mass nounMedicine An antibiotic drug made by chemical modification of penicillin and used to treat bacterial infections.
 Example sentencesExamples
-  A high proportion of these bacteria demonstrate resistance to multiple antibiotic medications, especially to methicillin and oxacillin.
 -  Nafcillin and oxacillin come in oral preparations but are poorly absorbed.
 -  Beta-lactam antibiotics include methicillin and other more common antibiotics such as oxacillin, penicillin and amoxicillin.
 -  Dicloxacillin, oxacillin, first-generation cephalosporins, or amoxicillin-clavulanate are also acceptable alternatives.
 -  The patient was switch to intravenous oxacillin and cefuroxime.
 
Origin
  
1960s: blend of oxazole and penicillin.