rotenone
/ˈrəʊtənəʊn
/noun [mass noun] Chemistry
A toxic crystalline substance obtained from the roots of derris and related plants, widely used as an insecticide.
- A polycyclic ketone; chemical formula: C23H22O6.
- 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.
Origin
1920s: from Japanese rotenon (from roten 'derris') + -one.
- uncontentious
- uncontested
- uncontestedly
- uncontradicted
- uncontrived
- uncontrollable
- uncontrollableness
- uncontrollably
- uncontrolled
- uncontrolledly
- uncontroversial
- uncontroversially
- uncontroverted
- unconventional
- unconventionalism
- unconventionality
- unconventionally
- unconverted
- unconvinced
- unconvincing
- unconvincingly
- uncooked
- uncool
- uncooperative
- uncooperatively