🇯🇵Japanese Source WordCode: JA

ホワイトホール

Pronunciation / Transliteration: howaito hōru

🇬🇧 Direct English Meaning:
White hole/ˈwaɪt hoʊl/
nounCEFR C2 (Proficient)Top #45000 frequency
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🇯🇵 Example Sentence in Japanese:

"ホワイトホールは物質を放出する仮説上の天体である。"

Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    A hypothetical region of spacetime which cannot be entered from the outside, but from which matter and light can escape.

    "In theoretical astrophysics, a white hole acts as the time-reversal of a black hole, ejecting matter instead of consuming it."
  2. 2

    A theoretical cosmic phenomenon hypothesized to be the exit point of a wormhole.

    "Some physicists have proposed that matter falling into a black hole might eventually emerge from a white hole in another part of the universe."

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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

Coined in the 20th century as a theoretical counterpart to the black hole, combining the adjective 'white' (denoting the opposite or emission of light) with the noun 'hole' in the astrophysical sense. The term emerged from general relativity equations suggesting regions of spacetime that can only emit matter and light, never let anything enter.

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