from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The distinctive scent which accompanies the first rain after a long warm dry spell.
  • noun The yellow organic oil that yields this scent.


from Wiktionary, Creative Commons Attribution/Share-Alike License

From petr(o)- + ichor. The term was coined by two Australian researchers in 1964 for an article in the journal Nature.



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  • Words within words: pet + rich + or

    September 12, 2014

  • The sun bakes the rock of the Nullarbor

    And has since the day of the dinosaur.

    The heat is relentless,

    The air dry and scentless

    Unless blessed by the bleed of the petrichor.

    September 12, 2014

  • I had no idea there was a word for this...awesome :-)

    November 26, 2011

  • Adam Scott Neal wrote a score titled "Petrichor". It is an auditory interpretation of an olfactory experience. Downloadable sheet music as well.

    June 23, 2011

  • You need a new umbrella.

    June 13, 2011

  • I feel much cleaner after it rains.

    June 13, 2011

  • the odor of the earth accompanying the first rain after a long period of warm dry weather

    August 8, 2009

  • The pleasant smell of rain falling on dry earth.

    June 24, 2009

  • Probably from the greek petros, rock; and ichor, the essence of the gods.

    August 14, 2008

  • The common rain smell is a gas called petrichor. Volatiles evaporate from plants and are absorbed by rocks, concrete etc. When the rain hits the rock, the volatiles are released into the atmosphere and you smell it.

    April 3, 2008

  • It seems ironic that we venerate petrichor, that essence of the earth and the rain, on the most unnatural of media (or is it?), the internet.

    December 7, 2006

  • the scent of rain on dry earth. thanks girlkate for this word!!

    December 1, 2006