word processor UK /wɜːd ˈpɹəʊˌsɛsə(ɹ)/US /wɝd ˈpɹɑˌsɛsɚ/ noun2 •A device similar to a simple computer, designed for word processing. •Software that provides word processing functions on a computer, typically including typeface selection, line justification and other formatting, pagination, and numerous other features. formsword processors · word-processors