from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Neighboring; contiguous.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Being in contact at some point or line; joining to; contiguous; bordering: an adjoining room.
- v. Present participle of adjoin.
from the GNU version of the Collaborative International Dictionary of English
- adj. Joining to; contiguous; adjacent.
From Old English ajoinen, from Old French ajoindre, (compare French adjoindre), from Latin adiungō ("join to"), formed from ad- ("to, towards, at") + iungō ("join"). (Wiktionary)