Source : Webster's Revised Unabridged Dictionary (1913)

Adjacence \Ad"ja"cence\, Adjacency \Ad*ja"cen*cy\, [Cf. LL.
   adjacentia.]
   1. The state of being adjacent or contiguous; contiguity; as,
      the adjacency of lands or buildings.

   2. That which is adjacent. [R.] --Sir T. Browne.