Urban Heat Island
Urbanization
uridine
uridine triphosphate (uridine 5'-triphosphate)
uridylic acid
U.S. Geological Survey
Usable storage capacity
USDA
Use value
User day
User fee
UTC
Uterine
Utility
utilization of farm animal genetic resources
| UTP
UV Index
UVM
UVV
UWNDS
VAAC
vaccination
Vaccine
Vaccinia
vacuole
VAD
VAD Wind Profile
Vadose Zone
VALDRIFT
Valid Time
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