x64

A form of x86-64 — A superset of the x86 instruction set architecture, providing additional support for 64-bit addressing while remaining mostly backward compatible with older applications.

Similar
AMD64x86-64
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

proper noun
  1. abbreviationcontractioncomputingContraction of x86-64.

    Synonyms: AMD64, x86-64

Synonyms & antonyms

Also see
amd64x86-64

Origin

Contraction.

Full word history & related roots →
Cite this entry
APA

x64. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/x64

MLA

“x64.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/x64. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “x64,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/x64.

Source: x64 on Wiktionary, CC BY-SA 4.0.