From Longman Dictionary of Contemporary EnglishSGMLSGML /ˌes dʒiː em ˈel/ noun [uncountable] technical (standard generalized markup language) a way of writing a document on a computer so that its structure is clear, and so that it can easily be read on a different computer systemFrom Longman Business DictionarySGMLSGML noun [uncountable]COMPUTING standard generalized mark-up language; a computer language for creating files, using a system of codes to label the different parts of a file so that those parts can be grouped together or treated in a similar way to each otherThe SGML data format allows documents to be shared between different publishing systems. → compare HTML, XML
