watermelon snow

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English

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watermelon snow
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Noun

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watermelon snow (uncountable)

  1. Snow stained with patches of red and green, naturally caused by Chlamydomonas nivalis.
  2. Chlamydomonas nivalis, a species of green algae containing the red pigment astaxanthin, secondary to green chlorophyll, sometimes encountered as reddish streaks in snow.

Synonyms

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