FORAMEN ACUSTICUM
\fˈɔːɹe͡ɪmˌɛn ɐkˈʌstɪkəm], \fˈɔːɹeɪmˌɛn ɐkˈʌstɪkəm], \f_ˈɔː_ɹ_eɪ_m_ˌɛ_n ɐ_k_ˈʌ_s_t_ɪ_k_ə_m]\
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.