What does TZD stand for?

What does TZD mean?

TZD	Thiazolidinedione Medical » Physiology
TZD	Thiazolidinedione Medical » Hospitals
TZD	Turbo Zone Direct Business » Firms
TZD	Toward Zero Deaths Community » Non-Profit Organizations
TZD	Time Zone Designator Governmental » US Government
TZD	Time Zone Designator Governmental » United Nations
TZD	Time Zone Designator Regional » Time Zones
TZD	Time Zone Designator Governmental » Military
TZD	True Zenith Distance Academic & Science » Meteorology
TZD	True Zenith Distance Governmental » Military
TZD	True Zenith Distance Governmental » NASA
TZD	True Zenith Distance Governmental » Transportation
TZD	Trance. Zen. Dance Community » Sports