noun🔗SharePyréthrineAny of a number of naturally occurring insecticides extracted from the pyrethrum plant; unusual in having a cyclopropane ring."The gardener sprayed pyrethrin on the roses to kill the aphids. "Le jardinier a pulvérisé de la pyréthrine sur les roses pour tuer les pucerons.compoundsubstancechemistryagricultureinsectplantsciencebiologynatureenvironmentChat with AIVocabulary GamePractice Reading
