This shows grade level based on the word's complexity.
pyrethroid
[ pahy-ree-throid, -reth-roid ]
/ paɪˈri θrɔɪd, -ˈrɛθ rɔɪd /
Save This Word!
This shows grade level based on the word's complexity.
noun Chemistry.
any of several synthetic compounds that are similar to but more persistent than natural pyrethrins.
QUIZ
ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes “sky blue”?
Meet Grammar CoachImprove Your Writing
Origin of pyrethroid
First recorded in 1950–55; pyrethr(in) + -oid
Words nearby pyrethroid
Pyrénées-Atlantiques, Pyrénées-Orientales, pyrenocarp, pyrenoid, pyrethrin, pyrethroid, pyrethrum, pyretic, pyreto-, pyretogenesis, pyretogenic
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
British Dictionary definitions for pyrethroid
pyrethroid
/ (paɪˈriːθrɔɪd) /
noun
any of various chemical compounds having similar insecticidal properties to pyrethrin
adjective
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