white hole

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white hole

n.
A hypothetical spacetime singularity similar to a black hole except that matter and energy are emitted rather than absorbed at the event horizon. Though theoretically possible according to general relativity, the existence of isolated white holes is generally considered to be physically impossible because they would violate the second law of thermodynamics, which prohibits the spontaneous reversal of many natural processes.

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.

white′ hole′

a theoretical celestial object into which matter is funneled from a black hole.
[1970–75]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

white hole

A hypothetical reverse of a black hole, from which matter emerges.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
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References in periodicals archive
Thus, if a black hole absorbs matter, then the quasar as a white hole (the superdense body according to Ambartsumyan) generates matter.
Some bounce scenarios are based on loop quantum gravity, like [27, 28], as well as black hole to white hole tunneling scenarios in which quantum tunneling is supposed to break the Einstein equation, and the apparent horizon is prevented to evolve into an event horizon [29, 30].
More physically it can be treated as a continuous fall of black hole matter into the white hole generated universe with its generation rate given by
Pablo had one other spot he wanted to check, a houseboat wreck positioned in what locals call a white hole.
Similarly, when the vehicle leaves the tunnel, intense daylight outside the tunnel will lead to a bright "white hole" both of which adversely affect the drivers vision.
How is it that they have a massive big white hole in which to pee yet most of it ends up splattered all over the toilet seat?
Technically this bathtub version is a white hole, an inverted black hole that keeps waves out rather than sucking them in.
Unfortunately, direct sources of light in the darkest scenes still pose a problem (a nighttime bonfire, for example, is reduced to a flickering white hole onscreen).
Such a process would describe an exploding white hole: matter emerging from an event horizon in the past, like the expanding universe."
The matter disappearing down a hole may, under certain circumstances, be blown 'out the other end,' creating a white hole in another twin universe.
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