use alt or title on text

Question

i want to use title on text. is this possible to make title on text? on some hard meaning of text i want use title.

Answer 1

For general text,

<span title="By this I mean that...">difficult part</span>

For acronyms, you can use

The <acronym title="full-width half-maximum">FWHM</acronym> wavelength is...

Answer 2

<p title="Alternate Text">Text</p>

http://www.w3schools.com/tags/att_standard_title.asp