from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Describing the conditions prior to the formation of the solar system, or describing the protostar that became the sun


proto- +‎ solar (Wiktionary)


  • Based on the data, some scientists theorized that the protosolar system was destroyed when a subspace compression collided with the Trifid star, causing it to go supernova and eject most of its mass.

    The Best and The Brightest


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