Able to provide for one's own needs without help from others; self-sufficient. / (of a nuclear chain reaction) Able to sustain itself without the need for additional fuel.

(broadcasting, dated, chiefly US) A radio or television program that airs on a commercial station but does not have commercial sponsorship or advertising.

plural of sustaining program

(ecology) The continuing yield of a biological resource by controlled periodic harvesting / The quantity of a resource harvested in this manner

(agriculture, ecology) Development which seeks to produce sustainable economic growth while ensuring future generations' ability to do the same by not exceeding the regenerative capacity of nature.

Alternative form of unsustained

plural of sustained yield

A person who travels to make a low impact on the local culture of another country. Also helping to generate employment for local people.

Ability of a building or civil engineering structure to perform its basic operational functions with seismic risk limited to acceptable level

plural of sustainable development