名詞 html:

1. a set of tags and rules (conforming to SGML) for using them in developing hypertext documents
   同義詞：hypertext markup language, hypertext mark-up language

HTML

n.（名詞）
A markup language used to structure text and multimedia documents and to set up hypertext links between documents, used extensively on the World Wide Web.
超文本鏈接標(biāo)識語言：用以建構(gòu)文章及多媒體文件并建立文件與文件間的超內(nèi)文連結(jié)所使用的上升語言，普遍用于萬維網(wǎng)

來源：
H(yper)t(ext) M(arkup) L(anguage)
H(yper)t(ext) M(arkup) L(anguage)