Tag Description
<acronym> Acronyms, when used, should be marked so that the user of the website is able to find the meaning of it, should they not know it intuitively. When the user hovers over the acronym, a tooltip should pop-up giving the expanded form of the acronym.

Example:

HTML Code Display
Can I get this <acronym title="as soon as possible"> ASAP</acronym> Can I get this ASAP