Early 17th century; earliest use found in Francis Bacon (1561–1626), lord chancellor, politician, and philosopher. From post-classical Latin adiacentia: see -ence.
Definition of adjacence in US English:
adjacence
nounəˈdʒeɪs(ə)ns
Adjacency.
Origin
Early 17th century; earliest use found in Francis Bacon (1561–1626), lord chancellor, politician, and philosopher. From post-classical Latin adiacentia: see -ence.