Abbreviate

[Jessica]

To make briefer; to shorten; to abridge; to reduce
by contraction or omission, especially of words written or spoken.

[Becky]

To shorten a sentence, for instance LOL is short for Laugh Out Loud.
Same as [FYI] is short for For Your Information and etc etc etc

[Stuff like that] are ALL [abbreviations].

[Agnes]

Shorten (a word, phrase, or text)