What is "gray matter"

n. (alternative spelling of grey matter English)

n. greyish nervous tissue containing cell bodies as well as fibers; forms the cerebral cortex consisting of unmyelinated neurons [syn: grey matter, grey substance, gray substance, substantia grisea]

"Gray Matter" is a short story by Stephen King, first published in the October 1973 issue of Cavalier magazine, and later collected in King's 1978 collection Night Shift. It is set in the same area as King's novel Dreamcatcher.

Gray Matter was a post-hardcore band from Washington, D.C., who played in the 1980s and 1990s. They disbanded in 1986, but reformed in 1990.

Gray Matter is a point-and-click adventure game designed by Jane Jensen, renowned for the Sierra Entertainment Gabriel Knight series. The game was developed by Wizarbox and published by dtp entertainment for Microsoft Windows and Xbox 360. It was released in November 2010 in Continental Europe and in English-speaking territories in 2011. There were plans for a Wii version.

The game takes place in Oxford and, to a lesser extent, in London. It follows the story of Samantha Everett, a street performer and magician, and Professor David Styles, an acclaimed and mysterious neurobiologist.

"Gray Matter" is the fifth episode of the first season of the American television drama series Breaking Bad. Written by Patty Lin and directed by Tricia Brock, it aired on AMC in the United States and Canada on February 24, 2008.