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pyrene

Definitions of pyrene
  1. noun
    the small hard nutlet of a drupe or drupelet; the seed and the hard endocarp that surrounds it
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    type of:
    nutlet
    a small nut
  2. noun
    a pale yellow crystalline hydrocarbon C16H10 extracted from coal tar
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    type of:
    hydrocarbon
    an organic compound containing only carbon and hydrogen
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