What does "x86-64" mean?

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

What is a synonym for "x86-64"?

Common synonyms include: amd64, x64.

X86-64

name

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Definitions

Proper Noun

1
A superset of the x86 instruction set architecture, providing additional support for 64-bit addressing while remaining mostly backward compatible with older applications.

Synonyms

All synonyms

amd64 x64

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.