tonoscope

noun
ton·​oscope | \-ˌskōp\

Definition of tonoscope 

: an acoustical instrument for enabling a singer or player to see instantly any deviation from proper pitch of the tone being produced

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History and Etymology for tonoscope

tono- + -scope

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Dictionary Entries near tonoscope

tonology

tonometer

tonoplast

tonoscope

tonotaxis

tonqua bean

tonsil

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