pyrethrin
Kelime Anlamı :

1. piretrin.
2. Pyrethrum adı bitkinin kurutulmuş çiçeklerinden elde edilen bir madde (Hastalık taşıyan böcekleri öldürücü olarak kullanılır).
Tanımlar :
1. either of two viscous liquid esters, C21H28O3 or C22H28O5, that are extracted from pyrethrum flowers and used as insecticides.
from The American Heritage® Dictionary of the English Language, 4th Edition
1. any of a number of naturally occurring insecticides extracted from the pyrethrum plant; unusual in having a cyclopropane ring.
from Wiktionary, Creative Commons Attribution/Share-Alike License
1. A substance resembling, and isomeric with, ordinary camphor, and extracted from the essential oil of feverfew; -- called also pyrethrum camphor.
from the GNU version of the Collaborative International Dictionary of English
1. A resinous compound found in pellitory resin from the root of Anacyclus pyrethrum.
from The Century Dictionary and Cyclopedia