U uranium; uracil or uridine; international unit of enzyme activity; unit.
u atomic mass unit.
u,
U,
U
U
u
u atomic mass unit.
| U The symbol for the element uranium. |
 The Greek letter upsilon. Entries beginning with this character are alphabetized under upsilon. |
u,
symbol incorrectly used to stand for micro- (properly μ), as in "ul" or "um," representing μL or μm.
U,
U
U
chemical symbol, uranium; unit; uracil.
U
Symbol for 1 International Unit of enzyme activity 2 Uracil, see there 3 Uranium, see there
u
Atomic mass unit
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