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

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,...

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!

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 […]

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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 affirmation.

Feb 9, 2016 · 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.

Information and translations of def in the most comprehensive dictionary definitions resource on the web.

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

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.