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black hole
1[ blak hohl ]
noun
- Astronomy. a theoretical massive object, formed at the beginning of the universe or by the gravitational collapse of a star exploding as a supernova, whose gravitational field is so intense that no electromagnetic radiation can escape.
- a deep, immeasurable space into which people or things vanish; an abyss:
I use earphones every day, but hate digging around for them in my black hole of a purse.
Black Hole
2[ blak hohl ]
noun
- Also called Black Hole of Cal·cut·ta [blak, , hohl, , uh, v kal-, kuht, -, uh]. a small prison cell in Fort William, Calcutta, in which, in 1756, Indians are said to have imprisoned 146 Europeans, only 23 of whom were alive the following morning.
- (lowercase) any usually wretched place of imprisonment or confinement.
black hole
noun
- an object in space so dense that its escape velocity exceeds the speed of light
- any place regarded as resembling a black hole in that items or information entering it cannot be retrieved
black hole
- An extremely dense celestial object whose gravitational field is so strong that not even light can escape from its vicinity. Black holes are believed to form in the aftermath of a supernova with the collapse of the star's core.
- See also event horizonSee more at star
black hole
- In astronomy , an object so massive that nothing, not even light , can escape its gravitation . Black holes were given their name because they absorb all the light that falls on them. The existence of black holes was first predicted by the general theory of relativity . Supermassive black holes have been found in the centers of many galaxies . Stellar black holes are thought to arise from the death of very massive stars . Astronomers expect to find many stellar black holes in the Milky Way .
Notes
Word History and Origins
Origin of black hole1
A Closer Look
Example Sentences
The planet is deep in the gravitational well of a black hole, and the black hole would surely have very high tidal forces.
So, only when you have spiraling matter down do you get these ferocious, black hole jets.
Would Endurance even be able to fly that close to a supermassive black hole without being disintegrated by the force of it?
Will backers want to pour ever more money into this black hole?
First, their simulations fail after the gravitational collapse stops, so they cannot show what replaces a black hole.
Calcutta, in India, taken by Surajah Dowla: of 146 prisoners put into a dungeon called the "black hole," 123 were suffocated.
The black hole grew smaller at the other end, and Bumper felt that he was safe for the present.
He would remain in this deathless, monotonous state forever in the black hole of the volcano's interior unable to move.
The hole into which he had been thrust was truly a “black hole,” though neither so hot nor so deadly as that of Calcutta.
With her going the bottom seemed to drop out of my existence, leaving a black hole where it had fallen through.
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