This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. The act or process of conserving.

n. Preservation or restoration from loss, damage, or neglect: manuscripts saved from deterioration under the program of library conservation.

n. The protection, preservation, management, or restoration of wildlife and of natural resources such as forests, soil, and water.

n. The maintenance of a physical quantity, such as energy or mass, during a physical or chemical change.

n. The act of preserving, guarding, or protecting; the keeping (of a thing) in a safe or entire state; preservation.

n. A wise use of natural resources.

n. The act of preserving, guarding, or protecting; the keeping (of a thing) in a safe or entire state; preservation.

n.

n. The act of conserving,guarding, or keeping with care; preservation from loss, decay, injury, or violation; the keeping of a thing in a safe or entire state.

n. Persistence; perdurance; permanence.

n. In England, a court or board of commissioners having jurisdiction over a port (as London, Liverpool, etc.) or of a river (as the Thames, the Mersey, etc.), and charged with the regulation as well as the conservation of its navigation, fisheries, etc.

n. (physics) the maintenance of a certain quantities unchanged during chemical reactions or physical transformations

n. an occurrence of improvement by virtue of preventing loss or injury or other change

n. the preservation and careful management of the environment and of natural resources

"The term conservation was first applied to water resources."

conservation of force   

betterment    improvement    advance   

law of conservation of mass    conservation of extension in phase    conservation of energy    law of conservation of matter    conservation of areas    conservation of density in phase   

anticonservationist    anticonservation   

preservation   

Alsatian    Americanization    Appalachian    Balkanization    Christianization    Confederation    Corp.    Croatian    Dalmatian    Desegregation   

preservation    sanitation    maintenance    welfare    transportation    prevention    management    recovery    allocation    distribution