geosmin means A bacterial derivative of decahydronaphthalene that has a strong earthy smell and is the material responsible for petrichor and for the earthy taste of beetroot.
geosmin is pronounced /d͡ʒiːˈɒz.mɪn/.
Why “geosmin” is a great word
A volatile organic compound produced by soil-dwelling bacteria, responsible for the characteristic earthy smell of petrichor and the taste of beetroot. From Ancient Greek γεω- (geō-, "earth") + ὀσμή (osmḗ, "smell") + the chemical suffix -in; coined in 1965 by American biochemist Nancy N. Gerber and French-American biologist Hubert A. Lechevalier. Unlike 'petrichor,' which names the whole complex perfume of rain on dry soil, or 'mustiness,' which connotes damp decay, geosmin is the precise molecular agent of a clean, mineral aroma. It is the deep inhalation after the first summer downpour, the faint grit on a freshly-dug potato, and the unmistakable, root-cellar sweetness of a sliced beet—the very scent of the planet turning over in its sleep.
Etymology
From Ancient Greek γεω- (geō-, “earth”) + ὀσμή (osmḗ, “smell”) + -in.
Coined by American biochemist Nancy N. Gerber and French-American biologist Hubert A. Lechevalier in 1965.
noun
- A bacterial derivative of decahydronaphthalene that has a strong earthy smell and is the material responsible for petrichor and for the earthy taste of beetroot.“A good example of this is geosmin, for which a typical sensitivity for the human nose is below 10 parts per trillion (10 parts in 10¹⁸ v/v) (ppt).”
Words closest in meaning
By meaning, not spelling — each word's AI semantic fingerprint, nearest first.
- petrichor 85% match — The distinctive scent, caused by geosmin, which accompanies the first rain after a long, warm, dry spell. vs geosmin →
- geophagism 76% match — The act or habit of eating earth. vs geosmin →
- geophagia 76% match — Consumption of clay, chalk or dirt. vs geosmin →
- aeroir 75% match — The taste or flavor of the air associated with a particular place or environment. vs geosmin →
- scent 75% match — A distinctive smell. vs geosmin →
- geophagist 75% match — One who eats earth or earthlike substances. vs geosmin →
- putrefaction 75% match — The act of causing to rot; the anaerobic splitting of proteins by bacteria and fungi with the formation of malodorous, incompletely oxidized products. vs geosmin →
- pungent 74% match — Having a strong odor that stings the nose; said especially of acidic or spicy substances. vs geosmin →