Enter a question or calculation and Wolfram|Alpha uses its built-in algorithms and data to get the answer. A huge set of information and tons of models, methods, and algorithms that make it possible to compute whatever can be computed about anything

Internet dictionary of slang words and phrases. More than 5 million street lingo words and expressions have been defined by the Internet community. The definitions on Urban Dictionary are meant to be those of slang or subculture words, phrases, and phenomena not found in standard dictionaries and tend to have the newest words. Entries are checked by volunteer editors and rated by site visitor…

Search scholarly literature across many disciplines and sources – peer-reviewed papers, theses, books, abstracts and articles, from academic publishers, professional societies, preprint repositories, universities and other scholarly organizations. Google Scholar helps you identify the most relevant published research in academia.

Look up your word in this authoritative Merriam-Webster Online Dictionary, with more than 215,000 definitions with pronunciations

When you have a sentence that you want to write, but aren't sure how to phrase some parts of it, phraseup* helps by finishing the sentence for you by suggesting possible combinations of words that fit well in the spots where you place a *. Each suggestion is accompanied by definitions, synonyms and translations to other languages.