from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A system of perennial agriculture emphasizing the use of renewable natural resources and the enrichment of local ecosystems.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any system of sustainable agriculture that renews natural resources and enriches local ecosystems.
- n. The design, installation and maintenance of indefinitely sustainable human communities set in balanced ecologies, both urban and rural.
perma(nent) + (agri)culture.(American Heritage® Dictionary of the English Language, Fourth Edition)