1. Any distinct time period in a sequence of events (synset 115315573)
    "we are in a transitional stage in which many former ideas must be revised or rejected"
  2. (physical chemistry) a distinct state of matter in a system;
    Matter that is identical in chemical composition and physical state and separated from other material by the phase boundary (synset 114503649)
    "the reaction occurs in the liquid phase of the system"
  3. A particular point in the time of a cycle;
    Measured from some arbitrary zero and expressed as an angle (synset 115315368)
  4. (astronomy) the particular appearance of a body's state of illumination (especially one of the recurring shapes of the part of Earth's moon that is illuminated by the sun) (synset 104683897)
    "the full phase of the moon"
  1. Arrange in phases or stages (synset 201652436)
    "phase a withdrawal"
  2. Adjust so as to be in a synchronized condition (synset 200395287)
    "he phased the intake with the output of the machine"

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