Ionian mode

noun

Music.

1. an authentic church mode represented on the white keys of a keyboard instrument by an ascending scale from C to C.

Word History and Origins

Origin of Ionian mode¹

First recorded in 1835–45

Example Sentences

The Lydian mode would be every white key starting from F to an octave above F. Every white key from C to C is the far more mundane and ordinary Ionian mode.

From Los Angeles Times