The dfn element

HTML dfn Syntax

Code:

<p>Have you heard that 
<dfn>
<abbr title="HyperText Markup Language">HTML</abbr>
</dfn> 
is the predominant markup language for Web pages?</p>

The dfn tag is used for indicating a definition. The dfn tag surrounds the word/term being defined.

Beispiel:

Have you heard that HTML is the predominant markup language for Web pages?