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 aqueous urea solution made with 32 5% urea and 67 5% deionized water
def - Wiktionary, the free dictionary 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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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 affirmation