1. The small hard nutlet of a drupe or drupelet; the seed and the hard endocarp that surrounds it
   "The pyrene of the cherry pit was discarded after eating the fruit"
    
2. A pale yellow crystalline hydrocarbon C₁₆H₁₀ extracted from coal tar
   "Researchers studied the environmental impact of pyrene contamination"

Derived forms: pyrenes

Type of: hydrocarbon, nutlet

Encyclopedia: Pyrene