In #key# HTML: hypertext markup language  #key#, the **`<acronym>`** tag defines an abbreviation or acronym. Whenever you hover the mouse over an abbreviation, it displays a pop-up text prompt. 

Another tag, **`<abbr>`**, is also used in the same context in the latest HTML version,  HTML5.

---
> The `<acronym>` element is supported in HTML 4, but not HTML 5. In HTML 5, you can use `<abbr>` instead. 

#       
## Syntax
```
<acronym title="English Capital Letters">ABC</acronym>
```

#      
## Code

The following code demonstrates the usage of the `<acronym>` element in HTML. We add the optional _title_ attribute to describe the abbreviation in line nine in the _OPENING_ acronym tag. 

The abbreviation we want to display is written between the opening `<acronym>` and closing `</acronym>` tags.

<!DOCTYPE html>
<html>
   <head>
      <title>EdPresso Shot</title>
   </head>
   <body>
      <h1>The acronym element</h1>
      <p>The <acronym title="The United Nations International Children's Emergency Fund">UNICEF</acronym> was founded in 1947.</p>
   </body>
</html>

codemirror

How to use the <acronym> element in HTML

Use `<acronym>` for abbreviations in HTML4, replaced by `<abbr>` in HTML5 for pop-up text prompts.