Definition of tonal adjective from the Oxford Advanced Learner's Dictionary

     

    tonal

     adjective
    adjective
    BrE BrE//ˈtəʊnl//
     
    ; NAmE NAmE//ˈtoʊnl//
     
     
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  1. 1(specialist) relating to tones of sound or colour
  2. 2 (music) having a particular key opposite atonal
  3. Word Origin late 18th cent. (designating church music in plainsong mode): from medieval Latin tonalis, from Latin tonus, from Greek tonos ‘tension, tone’, from teinein ‘to stretch’.
See the Oxford Advanced American Dictionary entry: tonal