Used to label an unusually large number of occurrances of a disease or condition in one place. An autism cluster would be an unusually large number of cases of autism in (perhaps) a single locality. Clusters constitute evidence in the search for causes of diseases and conditions.
Top definition. jawn. a word used by Philly cats to describe anything and everything. NY cats interject with the word joint but it doesn't convey the same feelings.
The jaw bone is also called the mandible. It is a long bone that includes your chin and angles up toward your ear on both sides of your face. On each side, the end of the jawbone is rounded like a ball. This ball, called the condyle, is the part of the jaw joint right in front of your ear. It lets you open and close your mouth. The jaw joint is also called the temporomandibular joint or TMJ. A fracture can happen anywhere along the jawbone. In more than 50% of cases, the jaw fractures in at least two places â a direct fracture where the jaw was hit and an indirect fracture somewhere else along the jaw.