The term ODT can refer to several things, among them:
ODT, an OpenDocument Text file
The ODT, or The Otago Daily Times ? New Zealand's oldest daily newspaper
O.D.T., Or Die Trying, is a video game created by Psygnosis for the Playstation and PC
Octal Debugging Technique, a debugger used by certain software from Digital Equipment Corporation
On Die Termination, a technique to reduce bounce back of electrical signals on high speed electrical connections
Orally disintegrating tablet, a pharmaceutical term used to describe drugs that "melt" on contact with saliva
The Office of Defense Transportation, an agency established by the United States to regulate transport during World War II
Objective Dvorak Technique, a technique used to estimate the strength of a tropical cyclone.
Omnidirectional treadmill, a treadmill which can convey objects in two dimensions
Source:
http://en.wikipedia.org/wiki/ODT