Source : Webster's Revised Unabridged Dictionary (1913)

Consistence \Con*sist"ence\, Consistency \Con*sist"en*cy\, n.
   [Cf. F. consistance.]
   1. The condition of standing or adhering together, or being
      fixed in union, as the parts of a body; existence;
      firmness; coherence; solidity.

            Water, being divided, maketh many circles, till it
            restore itself to the natural consistence. --Bacon.

            We are as water, weak, and of no consistence. --Jer.
                                                  Taylor.

            The same form, substance, and consistency. --T.
                                                  Burnet.

   2. A degree of firmness, density, or spissitude.

            Let the expressed juices be boiled into the
            consistence of a sirup.               --Arbuthnot.

Source : WordNet®

consistency
     n 1: the property of holding together and retaining its shape;
          "when the dough has enough consistency it is ready to
          bake" [syn: {consistence}, {body}]
     2: a harmonious uniformity or agreement among things or parts
        [syn: {consistence}] [ant: {inconsistency}]
     3: logical coherence and accordance with the facts; "a rambling
        argument that lacked any consistency"
     4: (logic) an attribute of a logical system that is so
        constituted that none of the propositions deducible from
        the axioms contradict one another