An acronym is marked up as follows:
Note: The <acronym> tag is not supported in IE 5.5 or earlier versions.
1. Definition and Usage
The <acronym> tag is not supported in HTML5. Use the <abbr> tag instead.
The <acronym> tag defines an acronym.
An acronym can be spoken as if it were a word, example NATO, NASA, ASAP, GUI.
By marking up acronyms you can give useful information to browsers, spell checkers, translation systems and search-engine indexers.
2. Tips and Notes
Tip: The title attribute is used to show the full version of the acronym when you mouse over it.
3. Differences Between HTML 4.01 and HTML5
The <acronym> tag is not supported in HTML5, but is supported in HTML 4.01.
4. Standard Attributes
The <acronym> tag supports the Standard Attributes in HTML.
5. Event Attributes
The <acronym> tag also supports the Standard Event Attributes in HTML.