RAII

R1A1I1I1

Initialism of Resource Acquisition Is Initialization, a popular design pattern in object-oriented programming that ties resources to the lifespan of associated objects to prevent resource leakage.

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CADReSBRM
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Meanings

nounRAII (uncountable)
  1. abbreviationinitialismuncountablecomputingInitialism of Resource Acquisition Is Initialization, a popular design pattern in object-oriented programming that ties resources to the lifespan of associated objects to prevent resource leakage.

    With RAII, the closing action cannot be skipped or bypassed, even if the function exits the scope prematurely with an early return or by throwing an exception.

    2019, Fedor G. Pikus, Hands-On Design Patterns with C++, page 469

    Synonyms: CADRe, SBRM

Synonyms & antonyms

Also see
cadresbrm

Origin

Coined by Bjarne Stroustrup.

Full word history & related roots →

Rhymes & wordplay

Anagrams

Airi
Cite this entry
APA

RAII. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/RAII

MLA

“RAII.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/RAII. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “RAII,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/RAII.

Source: RAII on Wiktionary, CC BY-SA 4.0.