The story
Trademark of AMD, from 3D + now, reflecting its potential for performance improvements in 3D graphics.
Etymology from Wiktionary, CC BY-SA 4.0.
3DNow!
Today it means: An enhancement of the MMX extension to the x86 CPU instruction set architecture, allowing for enhanced performance with 3D-graphics-heavy applications; rendered obsolescent by later versions of the SSE instruction-set extensions. Full definition →