Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A hypothetical hole in outer space from which energy, stars, and other celestial matter emerge or explode.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A theoretically possible but physically highly unlikely singularity from which matter and energy are able to escape; the antithesis of a black hole.

Etymologies

white + (black) hole.
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

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