phase-out
UK[ˈfeɪz aʊt]US[ˈfeɪz aʊt]
n
a gradual stopping of a process, activity, or product, especially according to an official plan
v
to gradually stop using or providing something
Morpheme Breakdown
phase
out
phase
stage
out
external/ending
Etymology
The term "phase-out" is a modern English compound, originating in the mid-20th century. Its logic is transparent, combining the concept of a sequential "phase," derived ultimately from the Greek for the appearance of the moon, with the directional particle "out," from Old English. Literally, it describes the process of moving a particular stage or item "out" of operation or existence. This construction elegantly captures the planned, step-by-step nature of discontinuation, evolving from these literal components into the standard term for managed obsolescence or termination.
Analysis
Structure: phase (stage) + out (external/ending)
- phase: From Greek phasis (appearance, phase of the moon), via Latin phasis and French phase. In this compound, it functions as the core noun/verb meaning a distinct stage or period.
- out: From Old English ūt (out, outside, forth). In this compound, it functions as an adverbial particle indicating movement towards an end, cessation, or removal.
Examples
The government announced a ten-year phase-out of the coal-fired power plants.
The old software will be phased out by the end of the quarter.
The treaty calls for a complete phase-out of the chemical weapons.