blue starter

English

Noun

blue starter (plural blue starters)

  1. (meteorology) A rapidly expanding disc-shaped region of luminosity, lasting less than a thousandth of a second, seen high above energetic lightning associated with hail-producing regions of thunderstorms, reaching up no higher than about twelve miles altitude.
    • 2007, Vladimir A. Rakov, Martin A. Uman, Lightning: Physics and Effects‎[1], Cambridge University Press, page 483:
      Blue starters were first observed in 1994.

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