amikacin /ˌæm.ɪˈkeɪ.sn̩/ noun1 •A semisynthetic aminoglycoside antibiotic that is derived from kanamycin and is administered intravenously or intramuscularly in the form of its sulfate C₂₂H₄₃N₅O₁₃·2 H₂SO₄ to treat serious bacterial infections. formsamikacins