What does ZT stand for?

What does ZT mean?

Zt	Total Available Effort (Z = Effort) Governmental » Military
ZT	Z-Axis of external Tank Governmental » NASA
ZT	Zachary Taylor Community » Famous
ZT	Zane Trace elementary school Community » Schools
ZT	Zeemann Terms Academic & Science » Physics
ZT	Zeitgeber Time Miscellaneous » Science Fiction
ZT	Zen Tricksters Community » Music
ZT	Zephyrtronics Business » Firms
ZT	Zero Think Community » Educational
ZT	Zero Tolerance Community » Educational
ZT	Zero Tolerance Governmental » Military
ZT	Zimmermann Telegram Governmental » US Government
ZT	Zimmermann Telegram Governmental » Military
ZT	Zona De Tolerncia International » Spanish
ZT	Zone Time Regional » Time Zones
ZT	Zone Transfer Governmental » Transportation
ZT	Zones Traveled Computing » Networking
ZT	Zoo Tycoon Medical » Veterinary
ZT	Zoom Text Computing » General
ZT	Zsolnay Tiles Business » Products
ZT	ZTracker Computing » Software
zT	zum Teil International » German