[ pe-trahy-kawr, ‐ker ]
/ ˈpɛ traɪˌkɔr, ‐kər /


a distinctive scent, usually described as earthy, pleasant, or sweet, produced by rainfall on very dry ground.


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Origin of petrichor

1960–65; petro-1 + ichor (in the classical mythology sense “ethereal fluid”) Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020