DEF Definition & Meaning - Merriam-Webster
The meaning of DEF is definitely. How to use def in a sentence.
DEF Definition & Meaning | Dictionary.com
DEF definition: definitely. See examples of def used in a sentence.
Where to Find DEF at the Pump: Map and List of Stations
DEF stands for diesel exhaust fluid. It's a non-toxic, colorless, and odorless liquid used in modern diesel engines equipped with selective catalytic reduction (SCR) systems to reduce harmful emissions.
def - Wiktionary, the free dictionary
Feb 28, 2026 · Failing to see the word's antecedents, I suspected that def was either bogus or an orphan, lost to its slang ancestors through mispronunciation or misspelling […]
Diesel exhaust fluid - Wikipedia
Diesel exhaust fluid (DEF; also known as AUS 32 and sometimes marketed as AdBlue[3]) is a liquid used to reduce the amount of air pollution created by a diesel engine. Specifically, DEF is an …
Diesel Exhaust Fluid - Shop DEF Fluid - AutoZone
Reduce emissions and keep your diesel vehicle running clean with diesel exhaust fluid (DEF) from AutoZone. We sell the best brands, including AutoZone, Lumax, and Peak Blue DEF fluid.
Oxford English Dictionary
Glossaries, abbreviations, pronunciation guides, frequency, symbols, and more. Explore different words used for the same concept or meaning over time. Change display settings, save searches and …
What Exactly Is DEF & What Does The Acronym Stand For?
Apr 19, 2025 · The letters DEF stand for diesel exhaust fluid. Sometimes, you'll hear people refer to it as DEF fluid, and all three formats are acceptable. If you're interested in learning more about DEF,...
DEF | definition in the Cambridge English Dictionary
DEF meaning: 1. very good: 2. very good: . Learn more.
Def - definition of def by The Free Dictionary
def Also found in: Thesaurus, Medical, Legal, Financial, Acronyms, Idioms, Encyclopedia, Wikipedia.