: the point or stage in a period of uniform circular motion, harmonic motion, or the periodic changes of any magnitude varying according to a simple harmonic law to which the rotation, …

A phase is one of the forms in which matter can exist, such as solid, liquid, or a gas.

Phase definition: any of the major appearances or aspects in which a thing of varying modes or conditions manifests itself to the eye or mind.. See examples of PHASE used in a sentence.

Phase comparison is a comparison of the phase of two waveforms, usually of the same nominal frequency. In time and frequency, the purpose of a phase comparison is generally to …

A phase is a particular stage in a process or in the gradual development of something.

A phase is a particular period of time, like someone whose "teenage rebellion" phase lasts well into her thirties. The word phase can mean a stage in a person’s development or a step in a …

1. any distinct or characteristic period or stage in a sequence of events or chain of development: there were two phases to the resolution; his immaturity was a passing phase.

PHASE meaning: 1 : a part or step in a process one part in a series of related events or actions; 2 : a short period of time during which a person behaves in a particular way or likes a particular …

Nov 28, 2025 · (astronomy) A particular appearance or state in a regularly recurring cycle of changes with respect to quantity of illumination or form, or the absence, of a body's illuminated …

Dec 4, 2025 · With our 2025 Moon Phase Calendar, you'll find the current Moon phase for tonight—plus, all the phases of the Moon for each day of the month.