From Longman Dictionary of Contemporary Englishkeywordkey‧word /ˈkiːwɜːd $ -wɜːrd/ noun [countable] a word that you type into a computer so that it will search for that word on the Internet You can find the site by entering the keyword ‘Quark’.From Longman Business Dictionarykeywordkey‧word /ˈkiːwɜːd-wɜːrd/ noun [countable]COMPUTING a word that you type into a computer so that it will search for that word in a set of documents or on the InternetYou can search for articles containing a particular keyword.