Syringomyelia (SM) is a disease in which there is a syrinx, or cyst, in the spinal cord. The syrinx is filled with cerebrospinal fluid (CSF). Due to normal activities like coughing and straining, SM cavities can slowly become larger over a period of time, often years.
Freebase(0.00 / 0 votes)Rate this definition: Darien. Darien is a town in Fairfield County, Connecticut, United States. A relatively small community on Connecticut's Gold Coast, the population was 20,732 at the 2010 census. Darien was listed at #9 on CNN Money's list of top-earning towns in the United States as of 2011.
DuPage County where Darien resides is 336.55 square miles. The resident population of this county is 904,161 and has a population rank of 42 out of all the places in the United States. Darien has a total of 22,860 people and of those residents there are 11,215 males and 11,645 females. The median age of the male population is 39.6 and the female population is 41.7. There are approximately 13,551 births each year and around 5,596 deaths.