OPERATING
\ˈɒpəɹˌe͡ɪtɪŋ], \ˈɒpəɹˌeɪtɪŋ], \ˈɒ_p_ə_ɹ_ˌeɪ_t_ɪ_ŋ]\
Word of the day
international pitch
- the pitch used to tune instruments for concert performances; usually assigns 440 Hz A above middle C