TDI

TDI is a three-letter abbreviation with multiple meanings, including:

Tabbed document interface, a way for displaying information in graphical user interfaces.
Time Delay and Integration, a way of controlling the readout rate of a charge-coupled device (CCD).
Turbo Direct Injection, a type of diesel engine made by Volkswagen.
Toluene diisocyanate, an organic chemical used to make polymers, e.g. polyurethane.
TDI (formerly known as Telecommunications for the Deaf, Inc.) is an organization that promotes equal access in telecommunications and media for people who are deaf, hard of hearing, late deafened, or deaf blind.
TDI is Microsoft Windows networking Transport Driver Interface.
TDI is "Test Data In" in a JTAG interface.
Thomson Digital Image, French 3D animation software first released in 1986. The company was bought by Wavefront in 1993. See Maya pre-release history for more info.
Transistor Devices Inc., multinational company based in Hackettstown, New Jersey that manufactures DC based power supplies
Texas Department of Insurance
Technical Diving International
TDI Advertising, an advertising agency