Excel is a spreadsheet program from Microsoft, a component of its Office product group for business applications. In common with similar products, such as Lotus 1-2-3 and Corel's QuattroPro, Excel is an automated version of the paper-based spreadsheet that makes it easier to manipulate, process, and view the exceptionally good at or proficient in an activity or subject.Computer dictionary definition for what excel means including related links, information, and terms.