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.

zone of inhibition

an 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.


an encircling region or area; by extension, any area with specific characteristics or boundary. See also zona.

autonomous innervation zone
areas of innervation supplied by a single nerve, as for example the patch of skin on the medial side of the horse fore pastern which is supplied solely by the median nerve; used to assess the integrity of individual nerves.
ciliary zone
the outer of the two regions into which the anterior surface of the iris is divided by the angular line.
comfort zone
an environmental temperature between 55° and 70° F (13° and 21° C) with a humidity of 30 to 55%.
epileptogenic zone
an area, stimulation of which may provoke an epileptic seizure.
zone of inhibition
the area without bacterial growth surrounding an antimicrobial-impregnated disk in an antimicrobial sensitivity test.
provisional calcification zone
in developing bone longitudinal tubes of mineralized matrix which surround hypertrophic chondrocytes.
transitional zone
the circle in the equator of the lens of the eye in which epithelial fibers are developed into lens fibers.
References in periodicals archive ?
roseus chloroform stem extract showed the highest value for zone of inhibition i.
It was observed that extract of Cymbopogon citratus showed mean zone of inhibition of 6.
Escherichia coli proved to be resistance to all the isolates that is there is no clear zone of inhibition observed against the bacteria.
11 Results were interpreted on the basis of diameter of zone of inhibition; zone of inhibition more than 20mm was regarded as the most active, 18-20mm; significantly active, 15-17mm; good activity.
The Table 1 reveals that the biofilm producing Staphylococcus aureus (n=7) when subjected to antibiotic susceptibility test, produced a lesser zone of inhibition to each of the 9 antibiotics used as compared to its planktonic counterpart.
After the incubation process of 24 hours, the diameter of each zone of inhibition was measured to the nearest millimeter by using a ruler.
Antimicrobial Activity of the Tannin Extract as shown by the Zone of Inhibition (mm) Microorganism Zone of Inhibition (mm) of the tannin extract from C.
Table 2 shows the mean zone of inhibition of different test materials at different concentrations.
When mean inhibition zones of miswak were compared against three types of the isolated microorganisms, it was found that both M1 and M2 miswak exhibited highest mean zone of inhibition against Candida albicans in comparison to Staphylococcus aureus and Streptococcus mutans.
In qualitative testing, the zone of inhibition was calculated for different fabrics.