petrichor

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English[edit]

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Etymology[edit]

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

Pronunciation[edit]

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Noun[edit]

petrichor (uncountable)

  1. The distinctive scent which accompanies the first rain after a long warm dry spell.
    • 2010, Val Panesar, For the Sake of the Future:
      Though it had yet to begin raining, the familiar smell of petrichor appeared to be already present and Neelam suddenly wished she was sitting at home with a nice cup of tea and a good book.
  2. The yellow organic oil that yields this scent.
    • 1980, John E Bardach et al., Fish Behavior and its Use in the Capture and Culture of Fishes:
      He hypothesizes that this factor may be petrichor, an oil which has been isolated from silicate minerals and rocks [...].

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