MEANING: noun: The pleasant smell that accompanies the first rain after a dry spell.

ETYMOLOGY: Coined by researchers I.J. Bear and R.G. Thomas in 1964, from Greek petros (stone) + ichor (the fluid that supposedly flows in the veins of the gods in Greek mythology).

PET ICHOR - The unpleasant smell of a dog after it's gotten soaked in the first rain after a dry spell

PETRICLOR (sometimes PETRICHLOR) - the smell of this bleach will turn you to stone

PET RICHER - Leona Helmsley's dog was her sole heir

PERI CHOR - the space around the singers