a.xen.ic
adj.（形容词）Not contaminated by or associated with any other living organisms. Usually used in reference to pure cultures of microorganisms that are completely free of the presence of other organisms.无外来污染的，无生物污染的：没有被污染或和其它活的生物体发生联系的。经常用来指微生物的纯粹培养，这些微生物完全自由地游离于其它生物体的存在之外
【引伸】
axen.ically
adv.（副词）
