GNOTOBIOTIC

[gno.to.bi.ot.ic] adj [Gk gnotos known (fr. gignoskein to know) + biote life, way of life--more at know, biota] (1949): of, relating to, living in, or being a controlled environment containing one or a few kinds of organisms; also: axenic -- gno.to.bi.ot.i.cal.ly adv