Any of the atmospheric gases that contribute to the greenhouse effect.
Any of the atmospheric gases that contribute to the greenhouse effect by absorbing infrared radiation produced by solar warming of the Earth's surface. They include carbon dioxide (CO2 ), methane (CH4 ), nitrous oxide (N2 O), and water vapor. Although greenhouse gases occur naturally in the atmosphere, the elevated levels especially of carbon dioxide and methane that have been observed in recent decades are directly related, at least in part, to human activities such as the burning of fossil fuels and the deforestation of tropical forests.
American Heritage Science
Other Word Forms of Greenhouse-gas
Greenhouse-gas Sentence Examples
The largest source of greenhouse gas contributing to global warming is the burning of fossil fuels.
The damage already done to the climate by man's greenhouse gas emissions will affect us for the next 1,000 years.
The figures for greenhouse gas emission faired no better.
When you purchase carbon offset credits, funds are used to support greenhouse gas and clean energy projects in the US.
Energy savings - In 2006, Americans saved enough energy to avoid greenhouse gas emissions equal to those from 25 million cars and to save $14 billion on their utility bills.