Pyrethrin
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 Any of a number of naturally occurring insecticides extracted from the pyrethrum plant; unusual in having a cyclopropane ring.
"Ecoparasite control, with appropriate concentrations of carbaryl, malathion, or pyrethrin dusts, is permissible if the agent is applied externally to both test and control animals not less than seven days prior to the start of the test."
Example
More examples"Ecoparasite control, with appropriate concentrations of carbaryl, malathion, or pyrethrin dusts, is permissible if the agent is applied externally to both test and control animals not less than seven days prior to the start of the test."
Etymology
From pyrethrum + -in.
More for "pyrethrin"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.