Being next to and connected with; sharing a common border or touching at some point.
From Old French 'adjoindre', from Latin 'adiungere' meaning to join to, from 'ad-' (to) and 'iungere' (to join). The present participle form evolved to describe the state of being connected.
Real estate agents love this word because 'adjoining' sounds much more sophisticated than 'next to' and implies a closer, more integrated relationship between properties. It's the difference between being neighbors and being connected.
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