from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various mainly toxic antibiotics derived from strains of the soil bacterium Bacillus polymyxa and used to treat various infections with gram-negative bacteria.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of several toxic antibiotics, derived from the soil bacterium Bacillus polymyxa, used to treat infections by gram-negative bacteria
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any of several toxic antibiotics obtained from a particular soil bacterium
New Latin polymyxa, specific epithet (poly- + Greek muxa, slime) + -in.(American Heritage® Dictionary of the English Language, Fourth Edition)