phases
n. countable B1 Intermediate US //ˈfeɪzəz// UK //fˈeɪzɪz// phas·es
n. distinct stages in a process or parts of a cycle. You use this when something changes over time, like the moon or a long project.
n. distinct periods or stages within a series of events or a process of change. Often used to describe cyclical phenomena or the sequential steps of a development plan.
The project has three main phases.
The construction of the new library will be completed in several phases over the next two years.
Astronomers track the lunar phases to predict tidal patterns, while biologists observe the distinct growth phases of organisms to understand their life cycles.
Usage
Commonly used in the plural to describe a progression; often takes the preposition 'of' to specify the process.