sulfonamide

/sʌlˈfɑnəmaɪd/
noun
  1. A type of drug used to treat bacterial infections, also known as a sulfa drug.
    • Some people are allergic to sulfonamide antibiotics and must avoid them.
    • Before penicillin, sulfonamides were the main treatment for many bacterial diseases.
    • The doctor prescribed a sulfonamide for the patient's urinary tract infection.
  2. A chemical compound containing the group SO₂NH₂, used in making medicines and dyes.
    • The research focused on the structure of sulfonamide molecules.
    • Sulfonamide compounds are important in the production of certain dyes.
    • The chemist synthesized a new sulfonamide for testing in the lab.