black hole

noun

Definition of black hole

1 : a celestial object that has a gravitational field so strong that light cannot escape it and that is believed to be created especially in the collapse of a very massive star
2 : something resembling a black hole: such as
a : something that consumes a resource continually a financial black hole
b : an empty space : void … the archives of the past few years are a black hole.— David Herman
c : a dark and seemingly inescapable state or situation the black hole of depression

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Examples of black hole in a Sentence

a psychopath who seemingly has a black hole where his heart should be

Recent Examples on the Web

Everything from exploding stars to the super heated material churning around a black hole can give off X-rays that Chandra can pick up. Loren Grush, The Verge, "After briefly going offline, NASA’s Chandra X-ray space telescope is back in action," 15 Oct. 2018 Perhaps his most famous of these involves what comes out of black holes. Avery Thompson, Popular Mechanics, "Scientists Just Experimentally Proved One of Hawking's Wildest Theories," 23 Jan. 2019 Earlier this year, astronomers stumbled upon a fascinating finding: Thousands of black holes likely exist near the center of our galaxy. Eileen Meyer, Smithsonian, "Big Data is Transforming How Astronomers Make Discoveries," 15 May 2018 Hawking revolutionized scientists’ understanding of black holes, showing that these mysterious objects actually emit radiation and can therefore evaporate over long enough timescales. Mike Wall, Scientific American, "Stephen Hawking to Be Interred in Westminster Abbey," 21 Mar. 2018 The new findings suggest the bursts come from an environment with an extremely high magnetic field and temperature, and previously such conditions have been observed only in the vicinity of massive black holes. Doyle Rice, USA TODAY, "Bizarre 'fast radio bursts' detected from outer space," 11 Jan. 2018 Besides the book's release, Hawking's final paper, on the black hole information paradox, was recently published by his colleagues in the preprint journal ArXiv. Sarah Lewin, Space.com, "Stephen Hawking's Children and Colleagues Discuss Physicist's Final Book, Legacy," 17 Oct. 2018 Not for the black hole, of course—everybody knows that sound can’t travel in a vacuum. Corey Seymour, Vogue, "Serenity Now! How To Tune Out The Insanity When The World Goes Nuts," 21 Sep. 2018 The event horizon is the edge of the black hole, the boundary beyond which nothing can escape, even light. Brian Resnick, Vox, "How a star orbiting a supermassive black hole proves Einstein is (still) right about gravity," 26 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'black hole.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of black hole

1964, in the meaning defined at sense 1

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Last Updated

11 Feb 2019

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Time Traveler for black hole

The first known use of black hole was in 1964

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More Definitions for black hole

black hole

noun

English Language Learners Definition of black hole

: an invisible area in outer space with gravity so strong that light cannot get out of it

black hole

noun

Kids Definition of black hole

: a heavenly body with such strong gravity that light cannot escape it and that is thought to be caused by the collapse of a massive star

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