DHO as a chemical compound

DHO is the chemical formula for a species of Heavy water

Heavy water

Heavy water is water highly enriched in the hydrogen isotope deuterium; e.g., heavy water used in CANDU reactors is 99.75% enriched by hydrogen atom-fraction...

 that is mono-deuterated, meaning that one Hydrogen

Hydrogen

Hydrogen is the chemical element with atomic number 1. It is represented by the symbol H. With an average atomic weight of , hydrogen is the lightest and most abundant chemical element, constituting roughly 75% of the Universe's chemical elemental mass. Stars in the main sequence are mainly...

 is left intact on the Water

Water

Water is a chemical substance with the chemical formula H2O. A water molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at ambient conditions, but it often co-exists on Earth with its solid state, ice, and gaseous state . Water also exists in a...

 molecule while the other is replaced by a Deuterium

Deuterium

Deuterium, also called heavy hydrogen, is one of two stable isotopes of hydrogen. It has a natural abundance in Earth's oceans of about one atom in of hydrogen . Deuterium accounts for approximately 0.0156% of all naturally occurring hydrogen in Earth's oceans, while the most common isotope ...

 atom. The formula HDO is also used.

DHO as the Down Hill Only club

The Down Hill Only club is one of the oldest alpine skiing clubs in the world - founded in Wengen

Wengen

Wengen may refer to:*Wengen, a village and winter resort in Switzerland*La Val, a commune in South Tyrol, Italy with the German name "Wengen"*in Germany:**Wengen , a village in the municipality of Nennslingen in Mittelfranken...

 in the Jungfrau

Jungfrau

The Jungfrau is one of the main summits in the Bernese Alps, situated between the cantons of Valais and Bern in Switzerland...

 region of the Swiss Bernese Oberland

Bernese Oberland

The Bernese Oberland is the higher part of the canton of Bern, Switzerland, in the southern end of the canton: The area around Lake Thun and Lake Brienz, and the valleys of the Bernese Alps .The flag of the Bernese Oberland consists of a black eagle in a gold field The Bernese Oberland (Bernese...

in 1925. Currently, its membership numbers 1500. There is also an annual journal sent to all members.
The club is split into two main sections: racing, and social skiing, with many successful racers having been bred from the race section.