INDEFATIGABILITY
\ˌɪndɪfˌatɪɡəbˈɪlɪti], \ˌɪndɪfˌatɪɡəbˈɪlɪti], \ˌɪ_n_d_ɪ_f_ˌa_t_ɪ_ɡ_ə_b_ˈɪ_l_ɪ_t_i]\
Sort: Oldest first
By William Dodge Lewis, Edgar Arthur Singer
By Stormonth, James, Phelp, P. H.
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.