XHTML      
noun [ U ]  trademark uk/ˌeks.eɪtʃ.tiː.emˈel/ us/ˌeks.eɪtʃ.tiː.emˈel/
 可扩展超文本标记语言(extensible hypertext markup language的缩写)
abbreviation for extensible hypertext markup language: a way of marking text to be shown on computer systems and the internet