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  1. Oxford American Dictionary

    Crab Nebula

    • IPA[ˈkrab ˌnebyələ]
    • ph.
      an irregular patch of luminous gas in the constellation Taurus, believed to be the remnant of a supernova explosion seen by Chinese astronomers in 1054. At its center is the first pulsar to be observed visually, and the nebula is a strong source of high-energy radiation.
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    Crab Nebula

    • ph.
      an irregular patch of luminous gas in the constellation Taurus, believed to be the remnant of a ...

    Oxford Dictionary