Plagal
Pronunciation : Pla"gal
Part of Speech : a.
Etymology : [F., from Gr. (Mus.)
Definition : Defn: 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. Plagal cadence, a cadence in which the final chord on the tonic is preceded by the chord on the subdominant.
Source : Webster's Unabridged Dictionary, 1913