First Peek Ever Inside America's Most Successful Movie Theater. It's in NYC (of course), but the other reasons for its success aren't so obvious: there are no special tricks (gourmet meals aren't here), lots of unusual choices (art films!), and a commando-like operation.
Wiktionary(5.00 / 1 vote)Rate this definition: 1  conservation(Noun) The act of preserving, guarding, or protecting; the keeping (of a thing) in a safe or entire state; preservation. 2  conservation(Noun) A wise use of natural resources.
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia. Related to conservation of matter: law of conservation of matter. (in physics) a law stating that matter can be neither created nor destroyed and that the amount of matter in the universe is finite. It is superseded by the special relativity equation e = mc2, but it is still applicable in the chemical process. Also called conservation of mass. See also conservation of energy.