petrichor

[pe-trahy-kawr, ‐ker]

noun

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

Origin of petrichor

1960–65; petro-1 + ichor (in the classical mythology sense “ethereal fluid”)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019