What Does Lexeme Mean?

A lexeme is a sequence of alphanumeric characters in a token. The term is used in both the study of language and in the lexical analysis of computer program compilation. In the context of computer programming, lexemes are part of the input stream from which tokens are identified. An invalid or illegal token produces an error. A lexeme is one of the building blocks of language.

Techopedia Explains Lexeme

A lexeme is a basic unit of meaning. Lexemes are the headwords in dictionaries. The lexeme “play,” for example, can take many forms, such as playing, plays, played. A lexicon consists of lexemes.