Pyrene
WordNet

noun


(1)   The small hard nutlet of a drupe or drupelet; the seed and the hard endocarp that surrounds it
(2)   A pale yellow crystalline hydrocarbon C16H10 extracted from coal tar
WiktionaryText

Noun


  1. A polycyclic aromatic hydrocarbon containing four fused benzene rings; first isolated from coal tar
  2. the stone of a drupe
 
x
OK