ˈȯ(r)gənəm, ÷ ̷ ̷ˈgan-, ÷ ̷ ̷ˈgän- noun
( -s )
Etymology: Medieval Latin, from Latin, organ — more at organ
1. : organon
2.
a. : a polyphonic voice part accompanying the cantus firmus note against note in parallel motion, usually at a fourth, fifth, or octave above or below
b. : part writing or singing of this nature in two, three, or four parts — called also diaphony