Source : Webster's Revised Unabridged Dictionary (1913)

Kingdom \King"dom\, n. [AS. cyningd?m. See 2d {King}, and
   -{dom}.]
   1. The rank, quality, state, or attributes of a king; royal
      authority; sovereign power; rule; dominion; monarchy.

            Thy kingdom is an everlasting kingdom. --Ps. cxiv.
                                                  13.

            When Jehoram was risen up to the kingdom of his
            father, he strengthened himself.      --2 Chron.
                                                  xxi. 4.

   2. The territory or country subject to a king or queen; the
      dominion of a monarch; the sphere in which one is king or
      has control.

            Unto the kingdom of perpetual night.  --Shak.

            You're welcome, Most learned reverend sir, into our
            kingdom.                              --Shak.

   3. An extensive scientific division distinguished by leading
      or ruling characteristics; a principal division; a
      department; as, the mineral kingdom. ``The animal and
      vegetable kingdoms.''                       --Locke.

   {Animal kingdom}. See under {Animal}.

   {Kingdom of God}.
      (a) The universe.
      (b) That spiritual realm of which God is the acknowledged
          sovereign.
      (c) The authority or dominion of God.

   {Mineral kingdom}. See under {Mineral}.

   {United Kingdom}. See under {United}.

   {Vegetable kingdom}. See under {Vegetable}.

   Syn: Realm; empire; dominion; monarchy; sovereignty; domain.

Mineral \Min"er*al\, a.
   1. Of or pertaining to minerals; consisting of a mineral or
      of minerals; as, a mineral substance.

   2. Impregnated with minerals; as, mineral waters.

   {Mineral acids} (Chem.), inorganic acids, as sulphuric,
      nitric, phosphoric, hydrochloric, acids, etc., as
      distinguished from the {organic acids}.

   {Mineral blue}, the name usually given to azurite, when
      reduced to an impalpable powder for coloring purposes.

   {Mineral candle}, a candle made of paraffine.

   {Mineral caoutchouc}, an elastic mineral pitch, a variety of
      bitumen, resembling caoutchouc in elasticity and softness.
      See {Caoutchouc}, and {Elaterite}.

   {Mineral chameleon} (Chem.) See {Chameleon mineral}, under
      {Chameleon}.

   {Mineral charcoal}. See under {Charcoal}.

   {Mineral cotton}. See {Mineral wool} (below).

   {Mineral green}, a green carbonate of copper; malachite.

   {Mineral kingdom} (Nat. Sci.), that one of the three grand
      divisions of nature which embraces all inorganic objects,
      as distinguished from plants or animals.

   {Mineral oil}. See {Naphtha}, and {Petroleum}.

   {Mineral paint}, a pigment made chiefly of some natural
      mineral substance, as red or yellow iron ocher.

   {Mineral patch}. See {Bitumen}, and {Asphalt}.

   {Mineral right}, the right of taking minerals from land.

   {Mineral salt} (Chem.), a salt of a mineral acid.

   {Mineral tallow}, a familiar name for {hatchettite}, from its
      fatty or spermaceti-like appearance.

   {Mineral water}. See under {Water}.

   {Mineral wax}. See {Ozocerite}.

   {Mineral wool}, a fibrous wool-like material, made by blowing
      a powerful jet of air or steam through melted slag. It is
      a poor conductor of heat.

Source : WordNet®

mineral kingdom
     n : all inorganic objects; contrasts with animal and plant
         kingdoms