Economy

The management of domestic affairs; the regulation and government of household matters; especially as they concern expense or disbursement; as, a careful economy.

Orderly arrangement and management of the internal affairs of a state or of any establishment kept up by production and consumption; esp., such management as directly concerns wealth; as, political economy.

The system of rules and regulations by which anything is managed; orderly system of regulating the distribution and uses of parts, conceived as the result of wise and economical adaptation in the author, whether human or divine; as, the animal or vegetable economy; the economy of a poem; the Jewish economy.

Thrifty and frugal housekeeping; management without loss or waste; frugality in expenditure; prudence and disposition to save; as, a housekeeper accustomed to economy but not to parsimony.

the system of production and distribution and consumption

an act of economizing; reduction in cost; "it was a small economy to walk to work every day"; "there was a saving of 50 cents"

the efficient use of resources; "economy of effort"