| ̷ ̷ ̷ ̷+...- noun
Etymology: Late Latin hypoaeoli us hypoaeolian (from — assumed — Greek hypoaiolios, from Greek hypo- + aiolios Aeolian, from Aiolis Aeolis, ancient country in Asia Minor) + English -an
: a plagal ecclesiastical mode consisting of a tetrachord and an upper conjunct pentachord represented on the white keys of the piano by an ascending diatonic scale from E to E — see mode illustration