Definitions for "Sunspot"
A cooler, and therefore darker, region of the Sun's photosphere caused by a solar magnetic disturbance. Strong, dense magnetic fields generated by circulating plasma sometimes become entangled and surge through the photosphere, creating the sunspot. The knot causes the temperature to fall to around 1000 K in the sunspot region, which darkens the photosphere. The dark center of the sunspot is called the umbra, and it is surrounded by a dim filamentary area called the penumbra. Sunspots range from Earth-size "pimples" to swollen scars halfway across the surface. Sunspot activity generally follows an 11-year cycle, called the "sunspot cycle."
A dark area on the Sun's surface that is cooler than the area around it. Sunspots are caused by magnetic storms on the Sun.
A darker region on the surface of the sun.
Sunspot (Roberto "Bobby" da Costa) is a fictional character, a Marvel Comics superhero in the X-Men-related groups The New Mutants and X-Force.
a random shock uncorrelated with underlying economic fundamentals