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2 definitions found
 for Conservation of energy
From The Collaborative International Dictionary of English v.0.48 :

  Conservation \Con`ser*va"tion\, n. [L. conservatio: cf. F.
     conservation.]
     The act of preserving, guarding, or protecting; the keeping
     (of a thing) in a safe or entire state; preservation.
     [1913 Webster]
  
           A step necessary for the conservation of Protestantism.
                                                    --Hallam.
     [1913 Webster]
  
           A state without the means of some change is without the
           means of its conservation.               --Burke.
     [1913 Webster]
  
     Conservation of areas (Astron.), the principle that the
        radius vector drawn from a planet to the sun sweeps over
        equal areas in equal times.
  
     Conservation of energy, or Conservation of force (Mech.),
        the principle that the total energy of any material system
        is a quantity which can neither be increased nor
        diminished by any action between the parts of the system,
        though it may be transformed into any of the forms of
        which energy is susceptible. --Clerk Maxwell.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  conservation of energy
      n 1: the fundamental principle of physics that the total energy
           of an isolated system is constant despite internal changes
           [syn: conservation of energy, law of conservation of
           energy, first law of thermodynamics]

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