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  1. DEF Definition & Meaning - Merriam-Webster

    What does the abbreviation DEF stand for? Meaning: defendant; defense. How to use def in a sentence.

  2. DEFINITION Definition & Meaning | Dictionary.com

    DEFINITION definition: the act of defining, or of making something definite, distinct, or clear. See examples of definition used in a sentence.

  3. DEF | definition in the Cambridge English Dictionary

    DEF meaning: 1. very good: 2. very good: . Learn more.

  4. What Is Diesel Exhaust Fluid (DEF)? - RealTruck

    1 day ago · Modern diesel emissions systems require DEF to operate effectively. Learn more about this fluid, what it’s made of, how it works, and more.

  5. def noun - Definition, pictures, pronunciation and usage notes | Oxford ...

    Definition of def noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

  6. DEF definition and meaning | Collins English Dictionary

    8 meanings: slang very good, esp of hip-hop definition → 1. a formal and concise statement of the meaning of a word, phrase,.... Click for more definitions.

  7. What Does 'Def' Mean? A Deep Dive into Its Origins and Usage

    The word “def” might seem simple at first glance, but its impact is far-reaching and multifaceted. You’ve probably heard it in conversations, song lyrics, or even seen it buzzing around social media platforms.

  8. 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.

  9. What Exactly Is DEF? What Is It Made Of? - fridayparts.com

    5 days ago · What is DEF? Learn why Diesel Exhaust Fluid is critical for your engine's power and how to avoid costly SCR system repairs.

  10. Def - definition of def by The Free Dictionary

    def Also found in: Thesaurus, Medical, Legal, Financial, Acronyms, Idioms, Encyclopedia, Wikipedia.