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“accretion”
accretion (s), accretions (pl) (noun forms)
1. The growth or increase in size by gradual external addition, accumulation, fusion, inclusion, or the growing together of separate things.
3. A process by which a body of rock or a landmass increases in size as a result of material accumulating on or around it resulting from alluvial deposits or water-borne sediments.
People who have money in the bank may expect interest to accrue or to grow as the years pass; so there are those who may then refer of the accretion of their capital.
2. In astronomy, a process in which matter that is revolving around an astronomical object is gradually pulled in and added to the body's mass as a result of gravity.3. A process by which a body of rock or a landmass increases in size as a result of material accumulating on or around it resulting from alluvial deposits or water-borne sediments.
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“accretion”
accretion disk (s), accretion disks (pl) (noun forms)
A disk of interstellar material surrounding a celestial object with an intense gravitational field; such as, a black hole.
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cresc-, -cret, -crease
(page 1)
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“accretion”
accretion
1. An accumulation of dust and gas into larger bodies.
2. A process in which many smaller bodies congregate together under the action of forces to produce much larger bodies.
2. A process in which many smaller bodies congregate together under the action of forces to produce much larger bodies.
Such a force could be, for example, gravitation.
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Astronomy and related astronomical terms
(page 1)
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“accretion”
accretion ring
The ring of hot gas and dust that encircles a black hole, formed from material torn off the companion star to the black hole.
In losing its initial angular momentum, the hot material descends into the black hole, friction causing it to reach temperatures high enough to produce x-rays.
It is by the accretion ring emission that makes it possible for the presence of the black hole to be inferred.
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Astronomy and related astronomical terms
(page 1)