Phase | Mean of phase in English Dictionary

/ˈfeɪz/

• Noun
• a part or step in a process
1. The project will be done in three phases.
2. He's in the final phase of treatment now.
3. The building project marks a new phase in the town's development.
4. These poems are from an early phase [=stage] in her career.
• a short period of time during which a person behaves in a particular way or likes a particular thing
1. He has been throwing tantrums a lot, but the doctor says it's just a phase.
2. She's going through a punk phase right now. [=she likes punk music and fashion at this point in her life]
• the shape of the part of the moon that is visible at different times during a month
1. a calendar based on the phases of the moon

• the state in which things work together with each other
1. Make sure the machine's wheels are moving in phase with each other.
2. The sound on this movie is out of phase. [=the sound does not match the images of the movie]
3. He seems to be out of phase [=(US) out of step] with the rest of the team.
• Verb
• to start to use or do (something) gradually over a period of time
1. The country is phasing in new paper currency.
2. The tax cut will be phased in over the next three years.
3. The law will phase tax cuts in over a period of two years.
• to stop using, making, or doing (something) gradually over a period of time
1. The company is phasing its old equipment out.
2. The airplane is being phased out in favor of a new design.