phase out(redirected from phases out)
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To gradually eliminate or remove someone or something. A noun or pronoun can be used between "phase" and "out." Of course I'm worried—the corporate office is phasing out all of the jobs in our department!
To take something or someone out of service gradually or in stages: The company phased out the old model of vacuum cleaner, and it's hard to find any in the stores now. We will gradually phase the old schedule out to create a more efficient one.