прилагательное [музыка] плагальный (вид гармонического оборота)
adjective Etymology: Medieval Latin plagalis, ultimately from Greek plagios oblique, sideways, from plagos side; akin to Latin plaga net, region, Greek pelagos sea 1. of a church mode having the keynote on the fourth scale step — compare authentic 4a 2. of a cadence progressing from the subdominant chord to the tonic — compare authentic 4b