phase out

1. To remove or relinquish the use of (something) little by little, either via discrete diminishing phases or (by extension) by continuous gradations; to remove in phases, or as if by phases (gradually).

   Leaded petrol was phased out in the course of the 1990s.

   auslaufen lassen, nach und nach abschaffen / aussondern

1. We're trying to phase out the use of non-biodegradable materials.

   CC BY 2.0 FR · Tatoeba · mailohilohi · C2Open on TatoebaReport a problem

2. The shortage started when leaded petrol was recently phased out for unleaded petrol.

   CC0 · Tatoeba · Cangarejo · C2Open on TatoebaReport a problem

3. Life's struggles don't undermine my inner strength in any way and certainly won't phase me out.

   CC BY 2.0 FR · Tatoeba · LoverofEnglish · B2Open on TatoebaReport a problem

4. Algeria should plan to phase out cars from combustion engines instead of planning to import Europe's used combustion engine cars.

   CC BY 2.0 FR · Tatoeba · Amastan · C2Open on TatoebaReport a problem

irregular

• phase outTo remove or relinquish the use of (something) little by little, either via discrete diminishing phases or (by extension) by continuous gradations; to remove in phases, or as if by phases (gradually).
• phase inTo introduce (something) little by little, either via discrete phases of increase or (by extension) by continuous gradations; to introduce in phases, or as if by phases (gradually); to begin (something) gradually.
• phase downTo gradually reduce the size or scale of.