The story
From translingual Baci(llus subtilis) + Tracy + -in. Named after American child Margaret Tracy (1936–1994), in whose leg infection the compound was first found.
Etymology from Wiktionary, CC BY-SA 4.0.
bacitracin
Today it means: A nonprescription polypeptide antibiotic isolated from a bacillus (Bacillus subtilis or Bacillus licheniformis), usually provided in topical ointment form especially against gram-positive bacteria. Full definition →