x86-64

English

Proper noun

x86-64

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

Synonyms

• AMD64
• x64

Hypernyms

• x86 (broad sense)

Coordinate terms

• x86-16 (16-bit x86)
• i386, IA-32, x86 (narrow sense), x86-32 (32-bit x86)