| Noun | 1. | markup language - a set of symbols and rules for their use when doing a markup of a document nomenclature, terminology, language - a system of words used to name things in a particular discipline; "legal terminology"; "biological nomenclature"; "the language of sociology" SGML, standard generalized markup language - (computer science) a standardized language for the descriptive markup of documents; a set of rules for using whatever markup vocabulary is adopted HTML, hypertext markup language, hypertext mark-up language - a set of tags and rules (conforming to SGML) for using them in developing hypertext documents |