# initializer

CEFR C1 · Noun

Source: https://englishreference.com/word/initializer
Updated: 2026-07-22

## Definition

a piece of code that sets the starting value for a variable or object when it is first created.

For teachers: a statement or expression that assigns an initial value to a data object or variable at the moment of its creation.

## Examples

- The programmer forgot to set an initializer for the new variable.
- If you do not provide an explicit initializer, the compiler may assign a default value like zero or null to the variable.
- Modern programming languages often allow complex initializers that execute logic to ensure an object is in a valid state immediately upon instantiation.

## Usage notes

- Commonly used in the context of object-oriented programming and variable declaration.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.