: 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, oscillation, or …

With our 2026 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.

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

Look up Phase, phase, or phases in Wiktionary, the free dictionary.

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.

6 days ago · Noun phase (plural phases) A distinguishable part of a sequence or cycle occurring over time.

Mar 5, 2026 · A phase is a distinct stage or state within a larger cycle or system. The word shows up across science, medicine, and everyday life, and its specific meaning depends on context.

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 process, such …

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

The project will be done in three phases. He's in the final phase of treatment now. The building project marks a new phase in the town's development. These poems are from an early phase [= stage] in …