Source : Webster's Revised Unabridged Dictionary (1913)

Contiguous \Con*tig"u*ous\, a. [L. contiguus; akin to contigere
   to touch on all sides. See {Contingent}.]
   In actual contact; touching; also, adjacent; near;
   neighboring; adjoining.

         The two halves of the paper did not appear fully
         divided . . . but seemed contiguous at one of their
         angles.                                  --Sir I.
                                                  Newton.

         Sees no contiguous palace rear its head. --Goldsmith.

   {Contiguous angles}. See {Adjacent angles}, under {Angle}.

   Syn: Adjoining; adjacent. See {Adjacent}. --
        {Con*tig"u*ous*ly}, adv. -- {Con*tig"u*ous*ness}, n.

Source : WordNet®

contiguous
     adj 1: very close or connected in space or time; "contiguous
            events"; "immediate contact"; "the immediate
            vicinity"; "the immediate past" [syn: {immediate}]
     2: connecting without a break; within a common boundary; "the
        48 conterminous states"; "the contiguous 48 states" [syn:
        {conterminous}]
     3: having a common boundary or edge; touching; "abutting lots";
        "adjoining rooms"; "Rhode Island has two bordering states;
        Massachusetts and Conncecticut"; "the side of Germany
        conterminous with France"; "Utah and the contiguous state
        of Idaho"; "neighboring cities" [syn: {abutting}, {adjacent},
         {adjoining}, {conterminous}, {neighboring(a)}]