/ Dictionary / Index G gnotobiosis: Meaning and Definition of Find definitions for: gno•to•bi•o•sis Pronunciation: (nō"tō-bī-ō'sis), [key] — n. an environmental condition in which germfree animals have been inoculated with strains of known microorganisms. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Gnosticize gnotobiote Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language