Definition of TY in Slang/Internet Slang. What does TY stand for? Examples: NFL, NASA, PSP, HIPAA,random Word(s) in meaning: chat "global warming". For a list of common chat shortcuts, check this: " ty " stands for (T)hank (y)ou, read Thank you. Reference: TY Definition - Meaning of TY - spielcasinoonlinespielen.win. This Slang page is designed to explain what the meaning of TY is. See more words with the same meaning: Internet, texting, SMS, email, chat acronyms (list.