Updated: 10/07/2019 by Computer Hope
U may refer to any of the following:
1. U is chat slang often used in chat as an abbreviated form of the word "you." For example, ICU is an abbreviation for "I see you."
2. U is a key used with the keyboard shortcuts Alt+U and Ctrl+U.
3. U is the twenty first letter of the English alphabet. See our U terms for a full listing of computer terms starting with "U."
Chat terms, Computer abbreviations