Movement through phases; arrangement of a sequence or cycle.(noun)
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Use "phasing" in a sentence
"His intention was always to resist temptation, although the phrase phasing out he had abandoned."
"President Obama's ambitious plan to begin phasing out nuclear weapons has run up against powerful resistance from officials in the Pentagon and other U.S. agencies, posing a threat to one of his most important foreign policy initiatives."
"Basically the bill said localities could not purchase any new electronic machines, forcing them to begin phasing the machines out and returning to a paper ballot system."