Definition of "supermassive black hole" []

• Any black hole with a mass 105 to a few times 1010 times that of the Sun. (noun)

Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License

• "This is not an instance of one galaxy colliding with another and absorbing it, or of a supermassive black hole or other identifiable astronomical phenomenon siphoning off stellar mass."