pluralize Syllabification: (plu·ral·ize)Pronunciation: /ˈplo͝orəˌlīz/Definition of pluralize verb [with object] 1cause to become more numerous. cause to be made up of several different elements. 2give a plural form to (a word). Derivatives pluralizationPronunciation: /ˌplo͝orəliˈzāSHən/ noun pluralize in other Oxford dictionaries Definition of pluralize in the British & World English dictionary