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germfree

or germ-free

[jurm-free, -free]
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adjective
  1. free of germs; sterile: This kind of research should be done in a germfree laboratory.
  2. (of experimental animals) born and raised under sterile conditions.

Origin of germfree

First recorded in 1930–35; germ + -free
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018