Touching; meeting or joining at the surface or border; hence, close together; neighboring; bordering or adjoining; adjacent: as, two contiguous bodies, houses, or estates: usually followed by to.Specifically In entomology: So thickly strewn as to be close together or touch, but without coalescing: as, contiguous spots, dots, or punctures, Almost or quite touching at the base: as, contiguous antennæ.