




HTML <acronym> tag (Not supported in HTML5)
HTML <acronym> tag is used with title attribute to contain a full explanation of an acronym content. When you hover the mouse on content, then it will show the explanation of word. 
Note: The <acronym> tag has been depreciated in HTML5 and we can use <abbr> tag instead of <acronym>.
Syntax


<acronym title="Indian Space Research Organisation">ISRO</acronym>


Following are some specifications about the HTML <acronym> tag


Display
Inline


Start tag/End tag
Both Start tag and End tag 


Usage
Semantic/Textual


Example


<!DOCTYPE html>

 <html>

 <head>

	<title>Acronym tag</title>

 </head>

  <body>

   <h2>Acronym tag Example</h2>

   <acronym title="Indian Space Research Organisation">ISRO</acronym>

  </body>

</html>



Difference between <acronym> and <abbr> tag
Although <acronym> tag is not supported by HTML5 but instead of that we can use <abbr> tag and we will get the same result using both tag. 
Example


<!DOCTYPE html>

 <html>

  <head>

   </head>

  <body>

   <h2>Acronym and Abbreviation Example</h2>

   <acronym title="Indian Space Research Organisation">ISRO</acronym>

   <abbr title="National Aeronautics and Space Administration">NASA</abbr>

  </body>

</html>



Supporting Browsers

Element Chrome IE Firefox Opera Safari
<acronym>YesYesYesYesYes














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