OPERA-GLASS
\ˈɒpəɹəɡlˈas], \ˈɒpəɹəɡlˈas], \ˈɒ_p_ə_ɹ_ə_ɡ_l_ˈa_s]\
Definitions of OPERA-GLASS
Word of the day
international pitch
- the pitch used to tune instruments for concert performances; usually assigns 440 Hz A above middle C