n.
Pronunciation: ˌ ba-s ə - ' tr ā -s ə n
Function: noun
Etymology: New Latin Bacillus subtilis (species of bacillus producing the toxin) + Margaret Tracy b about 1936 American child in whose tissues it was found
Date: 1945
: a polypeptide antibiotic isolated from a bacillus ( Bacillus subtilis or B. licheniformis ) and usually used topically especially against gram-positive bacteria