Bing Dictionary (English) is a next generation English language assistant for Microsoft Office® Word that leverages the cloud and your document selection for a more accurate and natural lookup experience. Special features include: fresh linguistic content, web-scale collocations, and powerful search capabilities that let users enter words as they sound. Additionally, users can explore English with functionality like wild cards that can suggest letters, words or phrases, optionally specified by part-of-speech.

Behind these features are an ever-expanding and massive dataset derived through mining the web. By continuously discovering and distilling high quality language knowledge on the Internet, Bing Dictionary can present a continuous English lexicon. The technology is based on novel natural language processing techniques used in the Engkoo project developed by Microsoft Research.