Definition of rotenone in English:

rotenone

noun ˈrəʊtənəʊnˈrōtnˌōn

mass nounChemistry

A toxic crystalline substance obtained from the roots of derris and related plants, widely used as an insecticide.
〔化〕鱼藤酮
A polycyclic ketone; chemical formula: C₂₃H₂₂O₆
Example sentencesExamples
- A good dusting of rotenone is effective, as is hand-picking, or giving the bush a good, hard shake.
- Use insecticidal soap sprays or rotenone to kill this pest.
- A hard spray of water will knock some bugs off the plants and a dusting of a non-toxic substance called rotenone shuts off their breathing mechanism.
- Found commonly in a number of wild plants, rotenone makes it impossible for the fish to use oxygen.
- By the mid 1800s, the heads of chrysanthemum flowers were used to obtain pyrethrum, and rotenone was extracted from the derris plant.

Origin

1920s: from Japanese rotenon (from roten 'derris') + -one.

Definition of rotenone in US English:

rotenone

nounˈrōtnˌōn

Chemistry

A toxic crystalline substance obtained from the roots of derris and related plants, widely used as an insecticide.
〔化〕鱼藤酮
A polycyclic ketone; chemical formula: C₂₃H₂₂O₆
Example sentencesExamples
- A hard spray of water will knock some bugs off the plants and a dusting of a non-toxic substance called rotenone shuts off their breathing mechanism.
- Use insecticidal soap sprays or rotenone to kill this pest.
- Found commonly in a number of wild plants, rotenone makes it impossible for the fish to use oxygen.
- A good dusting of rotenone is effective, as is hand-picking, or giving the bush a good, hard shake.
- By the mid 1800s, the heads of chrysanthemum flowers were used to obtain pyrethrum, and rotenone was extracted from the derris plant.

Origin

1920s: from Japanese rotenon (from roten ‘derris’) + -one.

词汇	rotenone
释义	Definition of rotenone in English: rotenone noun ˈrəʊtənəʊnˈrōtnˌōn mass nounChemistry A toxic crystalline substance obtained from the roots of derris and related plants, widely used as an insecticide. 〔化〕鱼藤酮 A polycyclic ketone; chemical formula: C₂₃H₂₂O₆ Example sentencesExamples A good dusting of rotenone is effective, as is hand-picking, or giving the bush a good, hard shake. Use insecticidal soap sprays or rotenone to kill this pest. A hard spray of water will knock some bugs off the plants and a dusting of a non-toxic substance called rotenone shuts off their breathing mechanism. Found commonly in a number of wild plants, rotenone makes it impossible for the fish to use oxygen. By the mid 1800s, the heads of chrysanthemum flowers were used to obtain pyrethrum, and rotenone was extracted from the derris plant. Origin 1920s: from Japanese rotenon (from roten 'derris') + -one. Definition of rotenone in US English: rotenone nounˈrōtnˌōn Chemistry A toxic crystalline substance obtained from the roots of derris and related plants, widely used as an insecticide. 〔化〕鱼藤酮 A polycyclic ketone; chemical formula: C₂₃H₂₂O₆ Example sentencesExamples A hard spray of water will knock some bugs off the plants and a dusting of a non-toxic substance called rotenone shuts off their breathing mechanism. Use insecticidal soap sprays or rotenone to kill this pest. Found commonly in a number of wild plants, rotenone makes it impossible for the fish to use oxygen. A good dusting of rotenone is effective, as is hand-picking, or giving the bush a good, hard shake. By the mid 1800s, the heads of chrysanthemum flowers were used to obtain pyrethrum, and rotenone was extracted from the derris plant. Origin 1920s: from Japanese rotenon (from roten ‘derris’) + -one.
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