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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. def - Wiktionary, the free dictionary

    Nov 17, 2025 · 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 […]

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

    The word ‘def’ traces its roots back to the 1980s, emerging from African American Vernacular English (AAVE). It serves as a shorthand for “definite” or “definitely,” often conveying strong …

  4. DEF | definition in the Cambridge English Dictionary

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

  5. DEF Definition & Meaning | Dictionary.com

    DEF definition: definitely. See examples of def used in a sentence.

  6. DEFINITION Definition & Meaning - Merriam-Webster

    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.

  7. 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!

  8. 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.

  9. DEF | English meaning - Cambridge Dictionary

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

  10. Where to Find DEF at the Pump: Map and List of Stations

    What is DEF? 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 …