phase in

In real, traceable use. Part of the curated seed collection; community review is coming.

Meaning · English

To 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.

Nghĩa · Tiếng Việt

Giới thiệu dần dần qua các giai đoạn tăng dần hoặc tăng liên tục.

Machine-translated — suggest a fix

Where it’s used: Used American English

Examples

The government will phase in the new education system over a period of three years.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Common questions

What does “phase in” mean?

To 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.

Is “phase in” formal or informal?

No register label has been reviewed yet — treat it as neutral and check the usage notes above.