Found 2 items, similar to pyrene.
English → English (WordNet) Definition: pyrene pyrene n 1: a pale yellow crystalline hydrocarbon C16H10 extracted from coal tar 2: the small hard nutlet of a drupe or drupelet; the seed and the hard endocarp that surrounds it
English → English (gcide) Definition: Pyrene Pyrene \Py"rene\, n. [Gr. ? fire.] (Chem.) One of the less volatile hydrocarbons of coal tar, obtained as a white crystalline substance, C16H10. [1913 Webster] Pyrene \Py"rene\, n. (Bot.) Same as Pyrena. [1913 Webster]