4th longest bull run in history. 6 of 11. The bull market turned 2,115 days old on Tuesday, meaning it's been going longer than SnapChat and Tinder -- combined. Since bottoming out at 666 on March, 9, 2009, the S&P 500 has surged over 200% and is now trading above 2,000. The bull run is the fourth-longest since 1928, according to Bespoke Investment Group.
Definition of chlorofluorocarbon for English Language Learners. : a gas that was once commonly used in various products (such as aerosols) but that is believed to cause damage to the ozone layer in the Earth's atmosphere.
Tetrachloroethylene, also known under the systematic name tetrachloroethene, or perchloroethylene ( perc  or  PERC ), and many other names, is a chlorocarbon with the formula Cl 2 C=CCl 2.It is a colorless liquid widely used for dry cleaning of fabrics, hence it is sometimes called dry-cleaning fluid..It has a sweet odor detectable by most people at a concentration of 1 part per million (1 ppm). Worldwide production was about one million metric tons in 1985.etrachloroethylene is an excellent solvent for organic materials. Otherwise it is volatile, highly stable, and nonflammable. For these reasons, it is widely used in dry cleaning. It is also used to degrease metal parts in the automotive and other metalworking industries, usually as a mixture with other chlorocarbons.