black hole

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Related to Blackhole: white hole, Supermassive black hole

black hole

n.
1. A massive star in the last phase of its evolution, in which the star collapses, creating a volume of spacetime with a gravitational field so intense that its escape velocity equals or exceeds that of light.
2. A great void; an abyss: The government created a bureaucratic black hole that swallows up individual initiative.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

black hole

n
1. (Astronomy) an object in space so dense that its escape velocity exceeds the speed of light
2. any place regarded as resembling a black hole in that items or information entering it cannot be retrieved
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

black′ hole′


n.
1. 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.
2. a void into which things vanish permanently.
[1965–70]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

black hole

An extremely dense celestial object that has a gravitational field so strong that nothing can escape, not even light. A black hole is formed by the collapse of a massive star's core in a supernova. See more at star.
Did You Know? One of the strangest objects in the universe is the burnt-out remnant of a large star, known as a black hole. The name comes from the fact that the star collapses into itself, becoming so dense that its gravitational pull keeps even light from escaping. And if light can't get out, then nothing that ever enters the black hole would ever escape. Rockets to the moon or Mars need to achieve what is called escape velocity, the speed necessary to overcome the Earth's gravity. But since nothing can ever go faster than the speed of light, nothing could ever go fast enough to reach the escape velocity necessary to pull out of a black hole. Here's how dense a black hole is: the sun has a diameter of about 864,000 miles (1,391,000 kilometers); for it to be as dense as a black hole, its entire mass would have to be squeezed down to a ball less than two miles across.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

black hole

An object with large mass but small size, from which no light can escape; formed in the first moments in the life of the universe. Also called a collapsar.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.black hole - a region of space resulting from the collapse of a starblack hole - a region of space resulting from the collapse of a star; extremely high gravitational field
region, part - the extended spatial location of something; "the farming regions of France"; "religions in all parts of the world"; "regions of outer space"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
černá díra
schwarzes Loch
must auk
musta aukko
חור שחור
svarthol
ブラックホール
zwart gat
sort hullsvart hull
czarna dziura
svart hål
kara delik
hố đen

black hole

n (Astron) → buco nero
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in periodicals archive ?
"Today, the British Government's own spending watchdog said a no-deal Brexit would cost the taxpayer PS30bn to fill the blackhole created by the crash out.
Using Einstein's prediction, the astronomers used Chandra data and gravitational lensing to study six quasars, with each comprising of a supermassive blackhole that rapidly consumes matter from the surrounding accretion disk.
The Scottish Fiscal Commission has warned of a "billion pound blackhole" by 2021 as fiscal devolution rolls on, producing lower tax revenues than predicted.
Assembling data gathered by eight radio telescopes around the world, astronomers created the picture showing the violent neighborhood around a supermassive blackhole, the lightsucking monsters of the universe theorized by Einstein more than a century ago and confirmed by observations for decades.
Summary: Hawaii [USA], Apr 13 (ANI): The first-ever blackhole to be pictured has been named 'Powehi' by a Hawaiian professor Larry Kimura, who was tasked with the job by astronomers involved in the project.
It means it is currently facing a financial blackhole of more than PS15m next year, and might have to increase council tax significantly.
A blackhole of PS131.5million by the end of 2018-19 is forecast, with a current deficit of PS34.6million.
He also worked on blackhole mechanics, showed how blackholes can vanish, how galaxies arose and postulated the 'wave function of the universe' Other than trying to unravel the mysteries of the universe, he was also one of the world's most popular science authors, trying to make physics comprehensible to the layman.
IT WAS announced that Sixth-Form students across Liverpool were to no longer receive free bus passes as Liverpool council attempted to plug a PS91m funding blackhole. Merseyside's wildlife haven, Knowsley Safari Park, above, right, celebrated its 40th anniversary while more than 1,300 triatheletes took to the city's streets for Liverpool's third triathalon.
FEARS for the future of an inner city farm emerged after a key backer was forced to withdraw support leaving a PS100,000 blackhole.
The chair of Credit Suisse (NYS: CS) has opined that the bank's trading operations do not have a blackhole.