DEF
From Wikipedia, the free encyclopedia
DEF is a three-letter abbreviation that may refer to:
- Design Exchange Format, in Electronic design automation domain
- Deutsche Emaillewaren-Fabrik, a factory owned by Oskar Schindler
- Diesel Emissions Fluid, see AdBlue
- Disarmed Enemy Forces, German prisoners of war after World War II
Def is also a word with mutiple uses.