Find the latest Deere & Company (DE) stock quote, history, news and other vital information to help you with your stock trading and investing. Welcome to Delaware Listen DE Schools Find your school's website State Agencies OPEN Air Quality Warnings Flag Status HALF STAFF De- definition: from; of (used in French, Spanish, and Portuguese personal names, originally to indicate place of origin).. See examples of DE- used in a sentence. DE- definition: 1. used to add the meaning "opposite", "remove", or "reduce" to a noun or verb: 2. written…. Learn more. De es una preposición, mientras que dé es el verbo dar conjugado en algunas de sus formas personales. Puesto que de es un monosílabo átono, se escribe sin acento gráfico. Definition of de- prefix in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Prefix derived from Latin de- "from, down, away" and Latin dis-, literally, "apart"