OBSERVABLE

\ɒbzˈɜːvəbə͡l], \ɒbzˈɜːvəbə‍l], \ɒ_b_z_ˈɜː_v_ə_b_əl]\
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1919 - The Winston Simplified Dictionary
By William Dodge Lewis, Edgar Arthur Singer
 
1899 - The american dictionary of the english language.
By Daniel Lyons

Word of the day

international pitch

  • the pitch used to tune instruments for concert performances; usually assigns 440 Hz A above middle C
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