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pyrethroid

[pahy-ree-throid, -reth-roid] /paɪˈri θrɔɪd, -ˈrɛθ rɔɪd/
noun, Chemistry
1.
any of several synthetic compounds that are similar to but more persistent than natural pyrethrins.
Origin
1950-1955
1950-55; pyrethr(in) + -oid
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for pyrethroid
  • Bring repellent and a spray containing a pyrethroid insecticide to clear your room of bugs.
  • Avoid synthetic pyrethroid products, which are not approved for organic gardening.
  • Key weapons in the fight against malaria, pyrethroid insecticides, are losing their edge.
  • In their place, pyrethroid insecticides have become popular.
British Dictionary definitions for pyrethroid

pyrethroid

/paɪˈriːθrɔɪd/
noun
1.
any of various chemical compounds having similar insecticidal properties to pyrethrin
adjective
2.
of or relating to such compounds
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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