Source : Webster's Revised Unabridged Dictionary (1913)

Submerge \Sub*merge"\, v. t. [imp. & p. p. {Submerged}; p. pr. &
   vb. n. {Submerging}.] [L. submergere, submersum; sub under +
   mergere to plunge: cf. F. submerger. See {Merge}.]
   1. To put under water; to plunge.

   2. To cover or overflow with water; to inundate; to flood; to
      drown.

            I would thou didst, So half my Egypt were submerged.
                                                  --Shak.

Source : WordNet®

submerging
     n : sinking until covered completely with water [syn: {submergence},
          {submersion}, {immersion}]