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gnotobiosis

[noh-toh-bahy-oh-sis]
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noun
  1. an environmental condition in which germfree animals have been inoculated with strains of known microorganisms.
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Origin of gnotobiosis

1945–50; < Greek gnōt(ós) known + -o- + -biosis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018