#1 phase n. [stage] 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". wn
#2 phase n. [form] (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". wn
#3 phase n. [phase angle] a particular point in the time of a cycle; measured from some arbitrary zero and expressed as an angle. wn
#4 phase v. arrange in phases or stages; "phase a withdrawal". wn
#5 phase v. adjust so as to be in a synchronized condition; "he phased the intake with the output of the machine". wn
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