adjacent adjacent /əˈdʒeɪsənt/

adjective

1. () Nearest in space or position; immediately adjoining without intervening space  ( side by side , adjacent , next )
   nearest in space or position; immediately adjoining without intervening space
    Had adjacent rooms
   had adjacent rooms
    In the next room
   in the next room
    The person sitting next to me
   the person sitting next to me
    Our rooms were side by side
   our rooms were side by side
   
2. () Having a common boundary or edge; abutting; touching  ( conterminous , contiguous , neighboring [American] , adjacent , neighbouring [Canadian, British] )
   having a common boundary or edge; abutting; touching
    Rhode Island has two bordering states; Massachusetts and Connecticut
   Rhode Island has two bordering states; Massachusetts and Connecticut
    The side of Germany conterminous with France
   the side of Germany conterminous with France
    Utah and the contiguous state of Idaho
   Utah and the contiguous state of Idaho
    Neighboring cities
   neighboring cities
   
3. () Near or close to but not necessarily touching  ( adjacent )
   near or close to but not necessarily touching
    Lands adjacent to the mountains
   lands adjacent to the mountains
    New York and adjacent cities
   New York and adjacent cities