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/Ëpet.rÉª.kÉËr/ /Ëpet.rÉª.kÉËr/ specialized. âº the smell produced when rain falls on dry ground, usually experienced as being pleasant. (Definition of âpetrichorâ from the Cambridge Advanced Learner's Dictionary & Thesaurus Â© Cambridge University Press)
There's a word for it. Rain has a distinctive smell that has been defined by science. The term petrichor was first coined in 1964. Rain has an unmistakable smell -- and, as it turns out, an unmistakable name to go with it. Petrichor. The roots of the word are Greek: Petra (stone), and ichor (the blood of gods from mythology). The term has been around awhile.