| English noun: pyrene | |||
| 1. | pyrene (substance) a pale yellow crystalline hydrocarbon C16H10 extracted from coal tar | ||
| Broader (hypernym) | hydrocarbon | ||
| 2. | pyrene (plant) the small hard nutlet of a drupe or drupelet; the seed and the hard endocarp that surrounds it | ||
| Broader (hypernym) | nutlet | ||