zone of inhibition
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Related to zone of inhibition: Minimum inhibitory concentration
zone of in·hib·i·tion(zōn in'hi-bish'ŭn)
The area around an antibiotic disc that contains no bacterial growth.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
zone of inhibitionan area of GROWTH inhibition around a point source, within a lawn of cultured organisms on a solid MEDIUM, due to the action of a growth-inhibitory substance, such as an ANTIMICROBIAL AGENT, present at the source. See also PLAQUE.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005