Source : Webster's Revised Unabridged Dictionary (1913)

Endurance \En*dur"ance\, n. [Cf. OF. endurance. See {Endure}.]
   1. A state or quality of lasting or duration; lastingness;
      continuance.

            Slurring with an evasive answer the question
            concerning the endurance of his own possession.
                                                  --Sir W.
                                                  Scott.

   2. The act of bearing or suffering; a continuing under pain
      or distress without resistance, or without being overcome;
      sufferance; patience.

            Their fortitude was most admirable in their patience
            and endurance of all evils, of pain and of death.
                                                  --Sir W.
                                                  Temple.

   Syn: Suffering; patience; fortitude; resignation.

Source : WordNet®

endurance
     n 1: the power to withstand hardship or stress; "the marathon
          tests a runner's endurance"
     2: a state of surviving; remaining alive [syn: {survival}]