DEF Definition & Meaning - Merriam-Webster
The meaning of DEF is definitely. How to use def in a sentence.
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 …
Meanings & Definitions of English Words | Dictionary.com
1 day ago · The world's leading online dictionary: English definitions, synonyms, word origins, example sentences, word games, and more. A trusted authority for 25+ years!
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 […]
What Is DEF and How Does It Work? - MotorTrend
Jul 29, 2024 · Diesel exhaust fluid, or DEF, is a key component in lowering pollutants emitted from diesel engines, helping to improve efficiency and reduce emissions.
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 …
DEF | definition in the Cambridge English Dictionary
DEF meaning: 1. very good: 2. very good: . Learn more.
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.
Def - definition of def by The Free Dictionary
def Also found in: Thesaurus, Medical, Legal, Financial, Acronyms, Idioms, Encyclopedia, Wikipedia.
20 Facts You Need To Know About Diesel Exhaust Fluid (DEF)
This article explains how DEF (Diesel Exhaust Fluid) works in conjunction with the SCR in diesel engines and how the EPA regulations affect truck owners.