CALLISTEPHUS
\kˈalɪstˌɛfəs], \kˈalɪstˌɛfəs], \k_ˈa_l_ɪ_s_t_ˌɛ_f_ə_s]\
Word of the day
international pitch
- the pitch used to tune instruments for concert performances; usually assigns 440 Hz A above middle C