Having a scale running from the dominant to its octave; said of certain old church modes or tunes, as opposed to those called authentic, which ran from the tonic to its octave
Английский Язык - Испанский Язык
Определение plagal в Английский Язык Испанский Язык словарь
[ 'plA-g&l ] (adjective.) 1597. From Late Latin plagalis, from Latin plaga, from plagius, from Byzantine Greek πλάγιος ‘plagal’, Ancient Greek πλάγιος ‘oblique’.