\pˈɪt͡ʃjʊɹɪm kˈɔːtɛks], \pˈɪt‍ʃjʊɹɪm kˈɔːtɛks], \p_ˈɪ_tʃ_j_ʊ_ɹ_ɪ_m k_ˈɔː_t_ɛ_k_s]\
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1846 - Medical lexicon: a dictionary of medical science
By Robley Dunglison

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Ultraviolet Ray

  • That portion electromagnetic spectrum immediately below visible range extending into x-ray frequencies. longer near-biotic vital necessary for endogenous synthesis of vitamin D and are also called antirachitic rays; the shorter, ionizing wavelengths (far-UV or abiotic extravital rays) viricidal, bactericidal, mutagenic, carcinogenic used as disinfectants.
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