Definition of counterglow

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  • counterglow is not a valid Scrabble US word!
  • counterglow is a valid Scrabble UK word with a point value of 17
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Definition of counterglow

  • a faint spot of light in the night sky that appears directly opposite the position of the sun; a reflection of sunlight by micrometeoric material in space (noun)

    Synonyms

    1. gegenschein

See definition of counterglow in Merriam Webster