# compile time

CEFR C1 · Compound

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

## Definition

the period when a computer program is being turned into a format the machine can run. It is the stage where the computer checks for errors in the code before the software actually starts.

For teachers: the duration or phase during which source code is translated into machine code by a compiler. Errors identified during this stage are contrasted with those that occur during program execution.

## Examples

- The computer found a small error at compile time.
- By catching the syntax error at compile time, the developer saved hours of debugging that would have been required if the app had crashed later.
- Modern programming languages often use static analysis to resolve as many dependencies as possible at compile time, thereby reducing the overhead and potential for failure during the final execution phase.

## Pitfalls

- Not "the error happened in compile time" but "the error happened at compile time" — The preposition 'at' is the standard choice when referring to this specific phase of software development.

## Usage notes

- Often used as a noun adjunct or in prepositional phrases like 'at compile time'.

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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.