UDD may refer to:
Science and technology
*Ultra-dense
deuterium
Deuterium (hydrogen-2, symbol H or D, also known as heavy hydrogen) is one of two stable isotopes of hydrogen; the other is protium, or hydrogen-1, H. The deuterium nucleus (deuteron) contains one proton and one neutron, whereas the far more c ...
*
Neutron
The neutron is a subatomic particle, symbol or , that has no electric charge, and a mass slightly greater than that of a proton. The Discovery of the neutron, neutron was discovered by James Chadwick in 1932, leading to the discovery of nucle ...
s, which have quark configurations of udd, or up-down-down
*Ultradisperse diamond, another name for
Detonation nanodiamond
*
Urine-diversion dehydration toilet
*
User driven development
Others
*
Uniform Distribution of Deaths, an assumption used in building actuarial life tables
*
Bermuda Dunes Airport
*UDD, the station code for the
Uddingston railway station in Uddingston, Scotland
*
United Front for Democracy Against Dictatorship, a political movement in Thailand
*
Universidad del Desarrollo
Universidad del Desarrollo (Spanish: ''Universidad del Desarrollo'') is a Chilean private university. Its main campus is in Santiago de Chile, with a secondary campus in Concepción.
History
The University was founded in Concepción in 1990, ...
private university in Chile
*
UDD (band), a Filipino band
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