phase in

verb

phased in; phasing in; phases in

: to start to use or do (something) gradually over a period of time : to introduce (something) slowly

The country is phasing in new paper currency.

The law will phase tax cuts in over a period of two years.

Examples of phase in in a Sentence

Recent Examples on the Web

The exemption would be phased in beginning next January, initially applying to vehicles built before 1981 and expanding by one model year for five years. — Darrielle Fair, CBS News, 13 Aug. 2026

Long before dinosaurs ruled the continents and modern crocodiles first appeared, their ancestors were already going through a decisive phase in their evolutionary history. — The Conversation, Fortune, 10 Aug. 2026

This implies that little red dots are not a unique population of their own, but are simply a phase in the development of galaxies with supermassive black holes. — Keith Cooper, Space.com, 7 Aug. 2026

The act’s safety requirements phase in through 2028, giving developers and auditors appropriate time to prepare. — Chicago Tribune, 6 Aug. 2026

Rhymes for phase in

• malmaison
• blazon
• brazen
• hazan
• kaizen
• zazen