Phase

• The phase of a waveform is the position of any peak or trough compared to the same feature on a second waveform.
• A phase of matter is a physically distinctive form of a substance, such as the solid, liquid, and gaseous phases of ordinary matter.
• The Lunar phase refers to the appearance of the Moon as viewed from the Earth.

This is a disambiguation page. If you followed a link here, you might want to go back and fix the link, so that it points to the appropriate page.