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1. The distinctive smell given off by earth, rock, or pavement at the beginning of a rain after a period of warm, dry weather.
2. The organic compounds that produce such a smell.

[petr- + ichor (coined in 1964 by Isabel Joy Bear and Richard Grenfell Thomas, Australian geochemists).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


a sweet smell that is produced when rain falls on parched earth
[C20: from Greek petra stone + ichor ]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
For dinner we had a table booked at the hotel's stylish Petrichor Restaurant which is led by Head Chef Nitin Pawar, and offers a modern European menu inspired by fresh, seasonal produce.
Dinner in the Petrichor Restaurant offers a modern European menu inspired by fresh, seasonal produce
Petrichor, the smell of rain on dry earth nuzzles the senses and the same feeling is triggered while sniffing the yellowed pages of old books!
The current administration is invoked more than once; for these witches, hate crimes and sexual assault are as much part of the landscape as the Highlands' wind, itself "sharp and fresh, always so full of petrichor and the taste of wild green leaves." Magic is present everywhere, from boxing gyms to nail salons.
As we scan the sky for rain clouds and sniff the air greedily for the smell of Petrichor [Petrichor (/'p?tr?k??r/) is the earthy scent produced when rain falls on dry soil.
Petrichor Networks, a privately held company providing cloud-native software for advanced advertising and IP video operations, has announced that the board of directors has elected Sean Rooney as Chief Executive Officer effective December 1, 2018, the company said.
'This rare tribe of inspirational people intrigues me to be an art curator.' Karzin loves hiking in the mountains, taking in the earthly scents and petrichor - the pleasant smell of earth when the first rains fall.
I was delighted by the petrichor (the pleasant smell of the earth after the rain).
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Petrichor Psychotherapy, 5 Huckleberry Court, Bellingham, 604348724
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