| noun | any distinct time period in a sequence of events “we are in a transitional stage in which many former ideas must be revised or rejected” |
| noun | (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 “the reaction occurs in the liquid phase of the system” |
| noun | a particular point in the time of a cycle; measured from some arbitrary zero and expressed as an angle |
| noun | (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) “the full phase of the moon” |
| verb | arrange in phases or stages “phase a withdrawal” |
| verb | adjust so as to be in a synchronized condition “he phased the intake with the output of the machine” |
| phase | verb | arrange in phases or stages |
| phase | noun | any distinct time period in a sequence of events |