a·xen·ic (ā-zĕnĭk, ā-zēnĭk)
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.
[A-1 + Greek xenikos, foreign (from xenos, stranger; see ghos-ti- in the Appendix of Indo-European roots).]
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