Sharing a common boundary or border; having the same limits or extent as something else.
From Latin 'conterminous' (con- + terminus). Originally used to describe provinces and territories with shared borders, the word entered English in the 16th century and expanded metaphorically to describe ideas or concepts with coinciding limits.
The contiguous United States is almost conterminous with the continental United States—but 'almost' matters! This word helps geographers distinguish subtle differences between neighboring concepts.
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