Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A hypothetical meson consisting of a bundle of gluons and containing no valence quarks.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun physics A theoretical particle composed entirely of gluons.

Etymologies

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

[glue (because gluons mediate the strong interaction that binds quarks together) + ball.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

glue +‎ ball

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Examples

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