Lying near, close, or contiguous; neighboring; bordering on; as, a field adjacent to the highway. "The adjacent forest." B. Jonson. Adjacent or contiguous angle. (Geom.) See Angle. Syn. -- Adjoining; contiguous; near. -- Adjacent, Adjoining, Contiguous. Things are adjacent when they lie close each other, not necessary in actual contact; as, adjacent fields, adjacent village...