bacitracin

== English == === Etymology === From translingual Baci(llus subtilis) +‎ Tracy +‎ -in. Named after American child Margaret Tracy (1936–1994), in whose leg infection the compound was first found. === Pronunciation === IPA(key): /ˌbæs.ɪˈtɹeɪ.sɪn/ === Noun === bacitracin (countable and uncountable, plural bacitracins) (pharmacology) A nonprescription polypeptide antibiotic isolated from a bacillus (Bacillus subtilis or Bacillus licheniformis), usually provided in topical ointment form especially against gram-positive bacteria. === References === “bacitracin”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.