Altered chord#Alteration

Alteration ( change of lat -old rare, change ), it means

• Alteration (geology), the conversion of minerals in a rock in secondary minerals
• Alteration (Medicine), the aggravation of a disease ( obsolete) or the fierce emotion of a patient
• Alteration (music), the chromatic variations of tones in the harmony

See also:

• Alteration Creek, a river in the U.S. state of Alaska (Valdez - Cordova )

• Disambiguation