ADJACENT Definition & Meaning - Merriam-Webster
www.merriam-webster.com
adjacent, adjoining, contiguous, juxtaposed mean being in close proximity. adjacent may or may not imply contact but always implies absence of anything of the same kind in between.
Adjacent - Wikipedia
en.wikipedia.org
Adjacent or adjacency may refer to: Adjacent (graph theory) in a graph, two vertices that are both endpoints of the same edge, or two distinct edges that share an end vertex