Sustainable:

adjective, Date:circa 1727. 1: capable of being sustained.2a: of, relating to, or being a method of harvesting or using a resource so that the resource is not depleted or permanently damaged <sustainable techniques> <sustainable agriculture> b: of or relating to a lifestyle involving the use of sustainable methods <sustainable society>

Sustainable Development:

Meeting our needs while not compromising the ability of future generations to meet theirs. Bruntland Commission

Sustainability:

A business approach to create long-term shareholder value by embracing opportunities and managing risks deriving from economic, environmental and social developments.  Dow Jones Sustainability Group Index