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G star

noun Astronomy.
  1. a yellow star, as the sun or Capella, having a surface temperature between 5000 and 6000 K and an absorption spectrum in which the ultraviolet pair of lines of singly ionized calcium are strongest and in which the Balmer series is prominent.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018