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.
Jawed (Javed, Javid Ø¬Ø§ÙØ¯; Urdu Jawaid, Javaid Ø¬Ø§ÙÛØ¯) is a masculine given name of Persian origin, with a meaning of eternal. The name is from Modern Persian jÃ¢wid Ø¬Ø§ÙØ¯ eternal.