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(ˌpriːbaɪəˈlɒdʒɪkəl) or


(Biology) occurring or existing before the beginnings of biological life


(ˌpri baɪ əˈlɒdʒ ɪ kəl)

of or pertaining to chemicals or environmental conditions existing before the development of the first living things.
Often, pre`bi•ot′ic (-ˈɒt ɪk)
References in periodicals archive ?
But as pointed out in this story, among the patients with severe psoriasis, the lymphoma rates are no different in the biologic era as in the prebiologic era.
In the prebiologic era, the natural history of Crohn's disease also was grim.
Heavenly chemistry Discovery of a rare, negatively charged organic molecule shed light on conditions in interstellar gas clouds, where amino acids, sugars, and other prebiologic compounds form (172: 54).
The discovery of a negatively charged organic molecule in space may provide new insight into the formation of amino acids, sugars, and other prebiologic compounds in interstellar gas clouds, the regions that spawn stars and planets.
Although hepatitis B virus (HBV) reactivation was already being reported in the prebiologic era--even in patients treated with as little as 7.
It's not a good idea to stop the prebiologic agent when starting the biologic because the biologic takes at least 3 months to build efficacy and the prebiologic's efficacy will fade within 1 month," setting the stage for a flare, Dr.
The biologics have had a revolutionary impact on psoriasis treatment, significantly reducing the number of patients who, for years, had been under-treated because of concerns about the side effects of prebiologic therapy.