Adjacency is being next to each other. A graph (in the graph theoretical sense) describes an adjacency relation. If the term is used with routers it's because graph theory has useful applications in that area.

Ad"ja"cence (#), 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.

 

© Webster 1913.

Log in or registerto write something here or to contact authors.