phase

Meanings

1. 1
   noun

   One stage in a series of changes or in a process that happens over time.

   The project is now entering its final phase.

2. 2
   noun

   The shape of the lit part of the moon as it changes through the month.

   The full phase of the moon lit up the whole garden.

3. 3
   verb

   To do something gradually in separate stages.

   The company plans to phase the new system in over six months.

From New Latin phasis, from Ancient Greek φάσις (phásis, “an appearance”), from φαίνω (phaínō, “to cause to appear”); compare phantasm and see face.

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