Definition of "permaculture"

permaculture

noun
countable and uncountable, plural permacultures
1. (agriculture) Any system of sustainable agriculture that renews natural resources and enriches local ecosystems.
  Quotations
  in a world where there are competing ends for the use of natural resources, and particularly energy forms, the aim of permaculture is to create productive systems which are ecologically sound and ecologically viable, provide for their own […]
  2007, Derek Thomas, Architecture and the Urban Environment, Routledge, page 178
2. The design, installation and maintenance of indefinitely sustainable human communities set in balanced ecologies, both urban and rural.