FUEL EFFICIENCY
\fjˈuːəl ɪfˈɪʃənsi], \fjˈuːəl ɪfˈɪʃənsi], \f_j_ˈuː_ə_l ɪ_f_ˈɪ_ʃ_ə_n_s_i]\
Word of the day
international pitch
- the pitch used to tune instruments for concert performances; usually assigns 440 Hz A above middle C