TI-89 Titanium

A high-performance calculator made by Texas Instruments. With a computer algebra system, it can evaluate algebraic expressions symbolically, rather than just giving a number answer; and is therefore much more powerful and difficult to use than the TI-84, the common graphing calculator used by high school and college students alike.

"Hey, Jack, where's your TI-84?"

"OH, I left it in the trash can. Check out this great TI-89 Titanium I just got! I won't even have to know how to do math anymore!"

by dAzzlr August 22, 2009

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TI-89

Definition: the Texas Instruments 89. Known by every student in American high schools as an Original Game Boy, that also can graph differential equations and keep useful notes for tests.
Alternate Definition: a Dell

"Dude I just got the best game for my TI-89, f-ing Track and Field 1998!"
"Oh man you're so lucky, I still have only an 83, but I got Pimp Quest, mother f-er."

by řikupich November 28, 2004

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TI-89 titanium

A device that qualifies colleges for free stuff: By stating that students are required to purchase the TI-89 Titanium on their syllabi, colleges are qualified for free equipment and emulator software from Texas Instruments. (from department minutes)

This device is so remarkable that some students can ace a math class with it, but without it cannot add 1/2 + 1/3.

Dean's secretary: Hey, you didn't put on your syllabus that you require the TI-89 Titanium.

(Dean walks in.)
Instructor: That's right. Doesn't it seem unethical to require students to pay $150 or more for a calculator so the college gets free stuff?

Dean: No, not at all.

by dpotto November 8, 2007

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