pyrene

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• March 2. 2016 from wordnet.princeton.edu

  pyrene — noun — english

  a pale yellow crystalline hydrocarbon C16H10 extracted from coal tar

• March 2. 2016 from wordnet.princeton.edu

  pyrene — noun — english

  the small hard nutlet of a drupe or drupelet; the seed and the hard endocarp that surrounds it