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  1. DEF Definition & Meaning - Merriam-Webster

    2026年2月24日 · The meaning of DEF is definitely. How to use def in a sentence.

  2. 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 …

  3. DEF - Diesel Exhaust Fluid & DEF Fluid - AutoZone

    Diesel exhaust fluid (DEF) is a nontoxic, colorless solution of urea and deionized water that helps your diesel vehicle cut harmful …

  4. DEF Definition & Meaning | Dictionary.com

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

  5. Def - definition of def by The Free Dictionary

    Since " Def Poetry Jam" launched its 12-city tour this year, it has inked a whirlwind of major media deals. Simmons' Def Jam has …

  6. DEF | English meaning - Cambridge Dictionary

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

  7. DEFINITION Definition & Meaning - Merriam-Webster

    3 天之前 · The meaning of DEFINITION is a statement of the meaning of a word or word group or a sign or symbol. How to use …

  8. DEF - Definition by AcronymFinder

    What does DEF stand for? DEF abbreviation. Define DEF at AcronymFinder.com.

  9. def - Wiktionary, the free dictionary

    4 天之前 · def (countable and uncountable, plural defs) In that case Wills, J., adopted a dictionary def of “Cowkeeper” as, “one whose …

  10. BlueDEF® Diesel Exhaust Fluid - 2.5 Gallon at Menards®

    DEF is the primary ingredient used to help convert NOx to harmless nitrogen and water. BlueDEF® is stable, colorless, non …