PERTINACY
\pˈɜːtɪnəsi], \pˈɜːtɪnəsi], \p_ˈɜː_t_ɪ_n_ə_s_i]\
Definitions of PERTINACY
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By Oddity Software
By Noah Webster.
Word of the day
international pitch
- the pitch used to tune instruments for concert performances; usually assigns 440 Hz A above middle C