Petrichor is the earthy scent produced when rain falls on dry soil. The word is constructed from Greek, petra, meaning "stone", + ichor, the fluid that flows in the veins of the gods in Greek mythology.

Petrichor is the earthy scent produced when rain falls on dry soil. The word is constructed from Greek, petra, meaning "stone", + ichor, the fluid that flows in the veins of the gods in Greek mythology.