lexeme /ˈlɛkˌsiːm/ noun5 •A lexical item corresponding to the set of all words (or of all multi-word expressions) that are semantically related through inflection of a particular shared basic form. •The abstract minimum unit of language or meaning that underlies such a set. •The set itself; a lexemic family. •The wordform chosen to represent such a set or family. •An individual instance of a continuous character sequence without spaces, used in lexical analysis. formslexemes