Definition of accretion disc in English:

accretion disc

Line breaks: ac¦cre|tion disc
(USaccretion disk)

noun

Astronomy
  • A rotating disc of matter formed by accretion around a massive body (such as a black hole) under the influence of gravitation.
    More example sentences
    • The Blandford-Znajek theory implies that energy flows to particle jets emanating perpendicularly from the accretion disk in certain supermassive black hole systems called quasars.
    • As the matter in the accretion disk spirals toward the black hole it is heated to very high temperatures and emits strong highly energetic electromagnetic radiation.
    • A Type Ia supernova, on the other hand, if the widely accepted model is correct, involves a white dwarf star, an orbiting companion, and an accretion disk - an inherently asymmetric configuration.

More definitions of accretion disc

Definition of accretion disc in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day tortie
Pronunciation: ˈtôrtē
noun
a tortoiseshell cat