from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Heedless or deliberate destruction of the natural environment, as by pollutants or an act of war.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The complete destruction of an ecosystem due to human activities. It may result from exploitation of resources, nuclear warfare or the dumping of harmful chemicals.
eco- + -cide (Wiktionary)