Definitions for "Accretion disk"
A swirling disk of gas and/or dust orbiting a star or black hole. The material within the disk may generate heat from friction and glow.
A flat disk of gas and dust in space that surrounds a newborn star, black hole, or other enormous object that is growing by attracting matter to it with its gravitational field.
A swirling disk of gas and dust orbiting a star or black hole. The material within the disk may generate heat from friction; the hottest accretion disks produce enormous amounts of X-rays. See also: star
The theoretical nebular cloud from which the planets and the Sun coalesced into the solar system.