gnotobiotic

adjective

of, relating to, living in, or being a controlled environment containing one or a few kinds of organisms

Wiktionary

Pronunciation: /ˌnəʊtəbaɪˈɒtɪk/

adj

Etymology: Etymology tree Ancient Greek γνωτός (gnōtós) English -biotic English gnotobiotic From Ancient Greek γνωτός (gnōtós, “known”) + English -biotic.

Pertaining to gnotobiotics.
Known with good certainty to be free of contaminating species, and thus offering such qualities as immunological naivete.