any of the major appearances or aspects in which a thing of varying modes or conditions manifests itself to the eye or mind.

a stage in a process of change or development

Each phase of life brings its own joys.

a side, aspect, or point of view

This is only one phase of the question.

a state of synchronous operation

to put two mechanisms in phase.

Astronomy .

the particular appearance presented by the moon or a planet at a given time.

one of the recurring appearances or states of the moon or a planet in respect to the form, or the absence, of its illuminated disk

the phases of the moon.

Zoology . color phase.

Chemistry . a mechanically separate, homogeneous part of a heterogeneous system

the solid, liquid, and gaseous phases of a system.

Physics . a particular stage or point of advancement in a cycle; the fractional part of the period through which the time has advanced, measured from some arbitrary origin often expressed as an angle (phase angle), the entire period being taken as 360?.

to schedule or order so as to be available when or as needed.

to put in phase; synchronize

to phase one mechanism with another.

phase down, to reduce by gradual stages.

phase in, to put or come into use gradually; incorporate by degrees

to phase in new machinery.

phase out, to bring or come to an end gradually; ease out of service

to phase out obsolescent machinery.

noun

appearance , aspect , chapter , condition , development , facet , juncture , point , position , posture , stage , state , step , timenotes:to faze is to \'disconcert , embarrass\'; phase as a verb is used with \'in\' or \'out\' to mean appear and disappear by stages , angle , frame of reference , hand , light , regard , respect , side , feature , leg , look , part , period , time , transition