phase out
To slowly stop using or making something until it completely disappears.
Meanings
To stop producing or selling a product gradually over time.
"The manufacturer decided to phase out the older model as demand dropped."
To gradually stop using a technology, chemical, or energy source.
"Many countries have committed to phasing out coal-fired power stations by 2035."
To gradually end a policy, rule, or practice.
"The university is phasing out its traditional examination format in favour of continuous assessment."
Very commonly used in business, environmental, and government contexts. Can appear in passive constructions: 'leaded petrol was phased out in the 1990s'. Frequently collocates with products, chemicals, technologies, and policies that are becoming obsolete or harmful. Common in both British and American English.
Commonly used with
Forms
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Synonyms
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