INVALIDATING
\ɪnvˈalɪdˌe͡ɪtɪŋ], \ɪnvˈalɪdˌeɪtɪŋ], \ɪ_n_v_ˈa_l_ɪ_d_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