Source : Webster's Revised Unabridged Dictionary (1913)

Inundation \In`un*da"tion\, n. [L. inundatio: cf. F.
   inondation.]
   1. The act of inundating, or the state of being inundated; an
      overflow; a flood; a rising and spreading of water over
      grounds.

            With inundation wide the deluge reigns, Drowns the
            deep valleys, and o'erspreads the plains. --Wilkie.

   2. An overspreading of any kind; overflowing or superfluous
      abundance; a flood; a great influx; as, an inundation of
      tourists.

            To stop the inundation of her tears.  --Shak.

Source : WordNet®

inundation
     n 1: the rising of a body of water and its overflowing onto
          normally dry land; "plains fertilized by annual
          inundations" [syn: {flood}, {deluge}, {alluvion}]
     2: an overwhelming number or amount; "a flood of requests"; "a
        torrent of abuse" [syn: {flood}, {deluge}, {torrent}]