DEF Definition & Meaning - Merriam-Webster
Feb 24, 2026 · 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 Definition & Meaning | Dictionary.com
DEF definition: definitely. See examples of def used in a sentence.
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.
def - Wiktionary, the free dictionary
Jun 14, 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 […]
DEF | English meaning - Cambridge Dictionary
DEF definition: 1. very good: 2. very good: . Learn more.
DEFINITION Definition & Meaning - Merriam-Webster
6 days ago · The meaning of DEFINITION is a statement of the meaning of a word or word group or a sign or symbol. How to use definition in a sentence.
DEF2026 | DEF
The DEF2026 Annual Gathering brings together the Virtuous Insurgency—entrepreneurs, technologists, economists, artists, policymakers, and civic builders shaping national security from the ground up. In …
Merriam-Webster: America's Most Trusted Dictionary
Merriam-Webster's Dictionary - America's Most Trusted Dictionary, with articles, reviews, word suggestions, and more.