from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of the atmospheric gases that contribute to the greenhouse effect.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. any gas, such as carbon dioxide or CFCs that contribute to the greenhouse effect when released into the atmosphere
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a gas that contributes to the greenhouse effect by absorbing infrared radiation
Sorry, no etymologies found.