TI

1)Can stand for Teen Institute, a group dedicated to helping young adults avoid substance abuse. Is somewhat similar to SADD, but sometimes people are slightly less likely to join it just cause their friends did. In some schools, TI and SADD are combined due to their similar goals.
2)Texas Instruments, manufacturer of many fine calculators, such as the TI-83 (a godsend for algebra students), TI-84, etc.

1) "They went to the TI meeting."
2) "I have a TI-83 calculator. w00t!"

by killerfiller December 17, 2005

TI

A rapper who likes to whine alot

If I wanted to hear a black person whine I'll turn on Cops or Judge Judy.

TI looks and sounds like he never broke puberty.

by Lotuseater July 27, 2006

TI

The abriviation for Treasure Island the strip club.

Lets all go to TI!

by your mamma March 5, 2003

ti

The 7th note in the scale, solfege style.

do re me fa so la TI do.

by Yeeaaaaah May 23, 2005

TI

The antonym of IT (Information Technology)
Definition: Technically Illiterate

Mike: I think I might be TI
Me: Why?
Mike: Well I just got my internet hooked up at home, and I went to youtube.com. It asked me to sign in, and asked for my email address, and my address, and a password, then it asked for my cell phone number, so I filled it in, and then I got a call 2 minutes later, tell me that I had signed a contract agreeing to pay $5 a week for text messages.

Me: Oh, dear. You were raped by the internet.

by p@$$ing thr.ugh January 12, 2010

TI

A short abbreviation for "take it"

P1: Baby can I get your boobs?
P2: TI

by 666-667 January 13, 2008

ti

short for that is. originating from a lazy swede using it in is icq-conversations.

- i´ll do the same as today, ti nothing.

by maverick September 10, 2004