having a common boundary or edge; abutting; touching - Rhode Island has two bordering states; Massachusetts and Conncecticut - the side of Germany conterminous with France - Utah and the contiguous state of Idaho - neighboring cities • Syn: adjacent, conterminous, contiguous • Similar to: connected • Derivationally related forms: contiguousness (for: contiguous), contiguity (for: contiguous), adjacency (for: adjacent)