coroutine.
A piece of code that performs a task, and that can be passed new input and return output more than once.
Meaning & usage
A piece of code that performs a task, and that can be passed new input and return output more than once.
Although a powerful tool, coroutines can be hard to understand due to the way data can flow back and forth between sections of the code.
Where this word comes from
Etymology tree Proto-Indo-European *ḱe? Proto-Indo-European *ḱóm Proto-Italic *kom Proto-Italic *kom- Latin con- Latin co-lbor. English co- French routineubor. English routine English coroutine From co- + routine, coined by American computer scientist Melvin Conway in 1958.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.