Part of speech: noun

Something perpetual; unending time.

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Usage examples "perpetuity":

  1. The defence has not such resources against even a single assailant, and we shall have solved the problem of continuous motion before she will have learned to deny in perpetuity. - "The Complete Project Gutenberg Works of George Meredith", George Meredith.
  2. The Constitution did not, like the Articles of Confederation, declare that the States had agreed to a perpetual union, but distinctly indicated the hope of its perpetuity by the expression in the preamble of the purpose to " secure the blessings of liberty to ourselves and our posterity." - "The Rise and Fall of the Confederate Government, Vol. 1 (of 2)", Jefferson Davis.
  3. To believe that for the existence and perpetuity of such a state a man should be willing to give his whole service, in property, in labor, and in life. - "The Americanism of Washington", Henry Van Dyke.