Definition of "sustainability"

The ability to sustain something.

1. (ecology) A means of configuring civilization and human activity so that society, its members and its economies are able to meet their needs and express their greatest potential in the present, while preserving biodiversity and natural ecosystems, planning and acting for the ability to maintain these necessary resources for future generations.

2. (business) The ability to sustain a business in the long term, which is a state that is partly dependent on, but broader than, profitability today or in the short term; it involves aspects of a plausible path toward eventual profitability (as applies to a startup) and ecologic sustainability (for example, the long-term dependence of the timber/lumber industry on forest preservation and renewal, or of fisheries on viable fish stocks).  quotations  examples

   Quotations

   • In a war of words that has broken out between Khan and Secretary of State for Transport Grant Shapps, the Mayor was accused of sending revenue-raising proposals to Shapps some three weeks late, giving him little choice but to extend negotiations. Khan countered this by alleging that 'unfair' conditions, such as raising council tax, are being attached to any new funding deal that would "punish Londoners" for the effect the pandemic has had on passenger numbers. He added: "These short-term deals are trapping TfL on life support rather than putting it on the path to long-term sustainability."

     2022 January 12, “Network News: Further extension to Transport for London emergency funding”, in RAIL, number 948, page 8

3. (civics) The ability to sustain a civic practice or process in the long term, such as democracy, entrepreneurialism, a war effort, or others.  examples