(uncountable) The quality of being adjacent, or near enough so as to touch.
(countable) A relationship of being adjacent to something.
2007, January 11, David W. Dunlap, Still, the Question of Displaying the Names of 9/11, “With the adjacencies for victims whose families wish them to be listed together, and the removal of the shields, which were so objectionable to so many ... , this is an approach that I hope will be acceptable to the great majority of the families affected,†he said afterward.
