Petrichor

Petrichor (/ˈpɛtrᵻkɔər/) is the earthy scent produced when rain falls on dry soil. The word is constructed from Greek, petra, meaning "stone", + ichor, the fluid that flows in the veins of the gods in Greek mythology.

The term was coined in 1964 by two CSIRO researchers, Isabel Joy Bear (Australian) and Richard G. Thomas (Australian), for an article in the journal Nature. In the article, the authors describe how the smell derives from an oil exuded by certain plants during dry periods, whereupon it is absorbed by clay-based soils and rocks. During rain, the oil is released into the air along with another compound, geosmin, a metabolic by-product of certain Actinobacteria, which is emitted by wet soil, producing the distinctive scent; ozone may also be present if there is lightning. In a follow-up paper, Bear and Thomas (1965) showed that the oil retards seed germination and early plant growth. This would indicate that the plants exude the oil in order to safeguard the seeds from germination under duress.

单词	petrichor
释义	petrichor 英汉-汉英词典 n. 潮土油词组 \| 习惯用语您要查找的是不是： patriarchy n. 父权制 psychometric adj. 心理测量的；心理测量学的 photometric adj. 光度计的；光度测定的 Terpsichore n. [希神]忒耳西科瑞（司舞蹈和合唱的女神） petrichor n. 下雨时的尘土味网络短语: T Petrichor 车库摇滚原声例句 202322 Petrichor: The distinctive smell you sense right before or after a rainstorm is known as petrichor. 2. Petrichor：你在暴风雨前后感受到的独特气味被称为 petrichor。英语百科 Petrichor Petrichor (/ˈpɛtrᵻkɔər/) is the earthy scent produced when rain falls on dry soil. The word is constructed from Greek, petra, meaning "stone", + ichor, the fluid that flows in the veins of the gods in Greek mythology. The term was coined in 1964 by two CSIRO researchers, Isabel Joy Bear (Australian) and Richard G. Thomas (Australian), for an article in the journal Nature. In the article, the authors describe how the smell derives from an oil exuded by certain plants during dry periods, whereupon it is absorbed by clay-based soils and rocks. During rain, the oil is released into the air along with another compound, geosmin, a metabolic by-product of certain Actinobacteria, which is emitted by wet soil, producing the distinctive scent; ozone may also be present if there is lightning. In a follow-up paper, Bear and Thomas (1965) showed that the oil retards seed germination and early plant growth. This would indicate that the plants exude the oil in order to safeguard the seeds from germination under duress.
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petrichor

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网络短语:

Petrichor