Meaning of HTML in English

in full HyperText Markup Language

Markup language derived from SGML that is used to prepare hypertext documents.

Relatively easy for nonprogrammers to master, HTML is the language used for documents on the World Wide Web . The text coding consists of commands contained in angle brackets 003C; 003E; that affect the display of elements such as titles, headings, text, font style, colour, and references to other documents, which can be interpreted by an Internet browser according to style rules.

Britannica Concise Encyclopedia.      Краткая энциклопедия Британика.