Source:http://linkedlifedata.com/resource/umls/id/C0449379
HL7V3.0: <p>An adjacency of two Entities held together by a bond which attaches to each of the two entities.</p><p><i>Examples:</i>biceps brachii muscle connected to the radius bone, port 3 on a network switch connected to port 5 on a patch panel.</p><p><i>UsageConstraints:</i>See Adjacency for the assignment of scoper (larger, more central) and player (smaller, more distant).</p>