an antibiotic obtained from a strain of bacteria (Bacillus subtilis) and used in the treatment of certain bacterial infections, esp. of the body surfaces
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'bacitracin'
arbitrary blend < bacillus
+ (Margaret) Trac(y)
, name of Am girl (1936-94) from whose wounds the strain was isolated + -in1