PULVEROLES
\pˈʌlvəɹˌə͡ʊlz], \pˈʌlvəɹˌəʊlz], \p_ˈʌ_l_v_ə_ɹ_ˌəʊ_l_z]\
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Word of the day
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.