"contiguous" in the adjective sense
1. contiguous, immediate
very close or connected in space or time
"contiguous events"
"immediate contact"
"the immediate vicinity"
"the immediate past"
2. conterminous, contiguous
connecting without a break within a common boundary
"the 48 conterminous states"
"the contiguous 48 states"
3. adjacent, conterminous, contiguous, neighboring
having a common boundary or edge abutting touching Massachusetts and Connecticut"
"Rhode Island has two bordering states
"the side of Germany conterminous with France"
"Utah and the contiguous state of Idaho"
"neighboring cities"
Source: WordNet® (An amazing lexical database of English)
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