TAI

As a three letter acronym, TAI can be:

the IATA airport code for Ta'izz International Airport
the ICAO code for TACA International Airlines
Transports Aériens Intercontinentaux, a now defunct French airline
International Atomic Time (Temps Atomique International)
Tai languages (ISO 639 alpha-3, tai)
Takemusu Aiki Intercontinental an Aikido organization
Technology Achievement Index, a composite measure of technological progress that ranks countries on a comparative global scale
Television Information Agency (Telewizyjna Agencja Informacyjna) - part of TVP - Poland's public television broadcasting corporation
The Academy Is..., a rock band
The Australia Institute, a leftwing think tank
Toshiba America, Inc.
Trust Association Interceptor, a computer security mechanism usually related to the Web
Turkish Aerospace Industries, Inc (TUSAŞ Havacılık ve Uzay Sanayi A.Ş.)
5-Trifluoromethyl-2-aminoindan, a psychoactive drug and serotonin releasing agent.

Translation

The word "TAI" occurs as such in the following languages: English, German, Esperanto, French, Italian, Polish.

Translation in Ripuarian: TAI (Watt ėßß datt?).