Germ-free
Full definition of germ-free
Adjective
germ-free
- Without any (especially harmful) microorganisms; aseptic. from 19th c.
- (science) Specifically, pertaining to an animal with no microorganisms living in or on it, used in gnotobiotic research.
- 2018, Nicola Davis, The Guardian, 256 March:It is worth being cautious: many studies show associations rather than cause and effect, and some are based only on studies in germ-free mice and have not been explored in humans.