DEF is consumed in selective catalytic reduction (SCR) that lowers the concentration of nitrogen oxides (NO x) in the diesel exhaust emissions from a diesel engine. Specifically, DEF is an aqueous urea solution made with 32.5% urea and 67.5% deionized water. DEF: Defrost: DEF: Developmental Evaluation Framework: DEF: Disarmed Enemy Forces: DEF: Département de l'Emploi Francophone (French: Department of Employment Francophone; various locations) DEF: Deployment Expeditionary Force (US Army) DEF: Direct Equipment Failure PSP, HIPAA Diesel Emissions Fluid + 1 variant. Academic & Science » Mathematics -- and more... DEETS - DEETYA - DEEVAL - DEEWR - DEEX - DEFA - DEFAC - DEFAMCO - DEFAULTED - DEFC. https://acronyms.thefreedictionary.com/DEF. Feedback, The World's most comprehensive professionally edited abbreviations and acronyms database, Documento di Economia e Finanza (Italian: Economic and Financial Document), Diplôme d'Etudes Fondamentales (French: Fundamental Studies Diploma), Diplôme d'Etudes Françaises (French: Diploma of French Studies; various universities), Détection Électronique Française (French: French Electronic Detection), Diccionario de Especialidades Farmaceuticas (Spanish: Dictionary of Specialty Pharmaceuticals; software), Digital Empowerment Foundation (New Delhi, India), Discovery Eye Foundation (nonprofit for eye disease research; California), Danmarks Elektroniske Forskningsbibliotek, Diplôme d'Entraineur Fédéral de Football (French: Federal Football Coach Diploma), Département de l'Emploi Francophone (French: Department of Employment Francophone; various locations), Detection Efficiency Function (microscope). DOE. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. Department of Energy. "DEF." Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Hose, Technology, Exhaust. The short answer is that DEF, or Diesel Exhaust Fluid, is an important component in keeping heavy-duty trucks and machinery operating within federal emission guidelines. What DEF is, at a chemical level, is a combination of deionized water and urea that transform harmful nitrous oxide emissions into harmless water and gas. Soon after, he met Rick Rubin, an affluent white student from Long Island who was also intrigued by rap music and had his own record label, Dictionary, Encyclopedia and Thesaurus - The Free Dictionary, the webmaster's page for free fun content, Asian Games: Judo results from 15th Asian Games, You Can't Keep Simmons Down on the Phat Farm, Diccionario de Especialidades Farmaceuticas, Danmarks Elektroniske Forskningsbibliotek. DEF. def (Adjective) very good (short for "definitive" or "definitely") © 1988-2020, Examples: NFL, This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. . 26 Nov. 2020. Fuel, Technology, Tank. Exhaust, Technology, Hose. Word(s) in meaning: chat  Diesel Emission Fluid. Postal codes: USA: 81657, Canada: T5A 0A7, Your abbreviation search returned 42 meanings, Note: We have 88 other definitions for DEF in our Acronym Attic, Search for DEF in Online Dictionary Encyclopedia, The Acronym Finder is Abbreviations.com. Diesel exhaust fluid (DEF; also known as AUS 32 and marketed as AdBlue) is a liquid used to reduce the amount of air pollution created by a diesel engine. We're doing our best to make sure our content is useful, accurate and safe.If by any chance you spot an inappropriate comment while navigating through our website please use this form to let us know, and we'll take care of it shortly. Acronym Finder, All Rights Reserved. STANDS4 LLC, 2020. NASA, ,random DEF. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved. "global warming" DEF. Get instant explanation for any acronym or abbreviation that hits you anywhere on the web. DEF: Diccionario de Especialidades Farmaceuticas (Spanish: Dictionary of Specialty Pharmaceuticals; software) DEF: Digital Empowerment Foundation (New Delhi, India) DEF: Discovery Eye Foundation (nonprofit for eye disease research; California) DEF: Developmental Evaluation Framework: DEF: Danmarks Elektroniske Forskningsbibliotek: DEF: Data Exchange Format: DEF Starting in 2010, DEF became a major need for companies using medium and heavy … Web. Diccionario de Especialidades Farmaceuticas (Spanish: Dictionary of Specialty Pharmaceuticals; software) DEF: Digital Empowerment Foundation (New Delhi, India) DEF: Default: DEF: Data Element Framework: DEF: Discovery Eye Foundation (nonprofit for eye disease research; California) DEF: Developmental Evaluation Framework: DEF: Danmarks Elektroniske Forskningsbibliotek Diesel Exhaust Fluids.