Similar term(s): steam.
Water in its gaseous form.
In the atmosphere it acts as a natural greenhouse gas.
Source: GreenFacts
The amounts of water vapor released to the atmosphere or extracted from it by human activities are minimal in the context of the water cycle.
Source: GreenFacts
GreenFacts Summary on Climate Change 2007 Update:
Español: Vapor de agua
Français: Vapeur d'eau
Nederlands: Waterdamp