Source : Webster's Revised Unabridged Dictionary (1913)

Exterminate \Ex*ter"mi*nate\, v. t. [imp. & p. p.
   {Exterminated}; p. pr. & vb. n. {Exterminating}.] [L.
   exterminatus, p. p. of exterminare to abolish, destroy, drive
   out or away; ex out + terminus boundary, limit. See {Term}.]
   1. To drive out or away; to expel.

            They deposed, exterminated, and deprived him of
            communion.                            --Barrow.

   2. To destroy utterly; to cut off; to extirpate; to
      annihilate; to root out; as, to exterminate a colony, a
      tribe, or a nation; to exterminate error or vice.

            To explode and exterminate rank atheism. --Bentley.

   3. (Math.) To eliminate, as unknown quantities. [R.]

Source : WordNet®

exterminate
     v 1: kill en masse; kill on a large scale; kill many; "Hitler
          wanted to exterminate the Jews, Gypsies, Communists, and
          homosexuals of Europe" [syn: {kill off}]
     2: destroy completely, as if down to the roots; "the vestiges
        of political democracy were soon uprooted" [syn: {uproot},
         {eradicate}, {extirpate}]