petrichor.
The distinctive scent, caused by geosmin, which accompanies the first rain after a long, warm, dry spell.
Meaning & usage
The distinctive scent, caused by geosmin, which accompanies the first rain after a long, warm, dry spell.
The yellow organic oil that yields this scent.
Where this word comes from
From petr(o)- + ichor. Coined by Australian scientist Richard Grenfell Thomas in 1964 for the article “Nature of Argillaceous Odour”, co-authored by Isabel Joy Bear and published in the journal Nature.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.