MAMMALIA PLACENTALIA
\mamˈe͡ɪli͡ə pləsˌɛntˈe͡ɪli͡ə], \mamˈeɪliə pləsˌɛntˈeɪliə], \m_a_m_ˈeɪ_l_iə p_l_ə_s_ˌɛ_n_t_ˈeɪ_l_iə]\
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.