Dictionary

pyrethrin

noun py·re·thrin \pī-ˈrē-thrən, -ˈre-\

Definition of PYRETHRIN

:  either of two oily liquid esters C21H28O3 and C22H28O5 having insecticidal properties and occurring especially in the flowers of pyrethrum
ADVERTISEMENT

Origin of PYRETHRIN

International Scientific Vocabulary, from Latin pyrethrum
First Known Use: 1882
Medical Dictionary

pyrethrin

noun py·re·thrin \pī-ˈrē-thrən, -ˈreth-rən\

Medical Definition of PYRETHRIN

:  either of two oily liquid esters C21H28O3 and C22H28O5 that have insecticidal properties and are the active components of pyrethrum

Browse

Next Word in the Dictionary: pyrethroidPrevious Word in the Dictionary: PyrenopezizaAll Words Near: pyrethrin
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears