a system of cultivation intended to maintain permanent agriculture or horticulture by relying on renewable resources and a self-sustaining ecosystem.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
the practice of producing food, energy, etc, using ways that do not deplete the earth's natural resources
Word Origin for permaculture
C20: coined by Bill Mollison (born 1928), Australian ecologist, from perma (nent agri) culture
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
by 1978, from permanent + agriculture or culture.
Online Etymology Dictionary, © 2010 Douglas Harper