1. the hard stone or pit inside certain fruits such as cherries or olives
Usage: botany
2. a polycyclic aromatic hydrocarbon compound found in coal tar and used in chemical research
Usage: chemistry

Examples

• The pyrene of the cherry was accidentally swallowed by the child.
• She carefully removed the pyrene from each olive before adding them to the salad.
• The date’s pyrene was much larger than expected.
• Researchers studied the pyrene compound extracted from coal tar.
• The pyrene structure consists of four fused benzene rings.
• Stone fruits are characterized by having a single pyrene surrounded by flesh.