What does the word abrieviate mean?

"Abrieviate" is not a real word in the English language. The correct spelling is abbreviate, which means:

To shorten (a word, phrase, or text) by omitting some parts, typically by using an abbreviation or acronym.

For example:

* "Dr." is an abbreviation for "Doctor."

* "USA" is an acronym for "United States of America."