[ ə'dʒeɪs(ə)nt ]
■ adjective
1》 next to or adjoining something else.
2》 Geometry (of a pair of angles) formed on the same side of a straight line when intersected by another line.
Derivatives
adjacency noun
Origin
ME: from L. ~- , adjacere 'lie near to', from ad- 'to' + jacere 'lie down'.