Contiguity is a series of things in continuous connection, a grouping of parts in contiguous physical contact. The concept was first set out in the Law of Contiguity, one of Aristotle's Laws of Association, which states that things which occur in proximity to each other in time or space are readily associated. Biology A cluster of genes that are located close to one another at a chromosome locus. Contiguous gene disorders result from deletions or duplications of a chromosome segment, thus causin… (More on Contiguity)