The American Heritage® Dictionary of the English Language, 4th Edition
adj. Not contaminated by or associated with any other living organisms. Usually used in reference to pure cultures of microorganisms that are completely free of the presence of other organisms.
adj. Containing only a single species of microorganism. For example, an "axenic culture" means that a pure sample of the organism in question has been grown.
adj. Isolated from organisms of any other species
the GNU version of the Collaborative International Dictionary of English
adj. raised under sterile conditions; -- of experimental animals.
adj. pure or completely free of the presence of other organisms; -- used of cultures of microorganisms.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. (of experimental animals) raised under sterile conditions
adj. (used of cultures of microorganisms) completely free from other organisms
Word Usage
"Researchers can generate bacteria-free axenic mice."