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gnotobiotics
gno·to·bi·ot·ics [ ntō bī óttiks ]


noun 
Definition:
 
study of organisms in controlled environment: the scientific study of organisms living either in a germ-free or a controlled environment, as when a known contaminant has been introduced ( takes a singular verb )

[Mid-20th century. < Greek gnōtos "known"]

gno·to·bi·ot·ic adjective
gno·to·bi·ot·i·cal·ly adverb
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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