Search Result for "pyrene": 
Wordnet 3.0

NOUN (2)

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;


The Collaborative International Dictionary of English v.0.48:

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]
The Collaborative International Dictionary of English v.0.48:

Pyrene \Py"rene\, n. (Bot.) Same as Pyrena. [1913 Webster]
WordNet (r) 3.0 (2006):

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