made of dried flower heads of pyrethrum plants
Used in a Sentence
pyrethrum
How to use pyrethrum in a sentence. Example sentences and definitions for pyrethrum.
Editorial note
I actually remember the first time I used Wikipedia, in '02 or '03, while researching pyrethrum insecticide in high school.
Examples3
Definitions4
Parts of speech1
Quick take
made of dried flower heads of pyrethrum plants
Meaning at a glance
The clearest senses and uses of pyrethrum gathered in one view.
white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum
spring-flowering garden perennial of Asiatic origin having finely divided aromatic leaves and white to pink-purple flowers; source of an insecticide; sometimes placed in genus Chrysanthemum
Definitions
Core meanings and parts of speech for pyrethrum.
noun
made of dried flower heads of pyrethrum plants
noun
white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum
noun
spring-flowering garden perennial of Asiatic origin having finely divided aromatic leaves and white to pink-purple flowers; source of an insecticide; sometimes placed in genus Chrysanthemum
noun
used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum
See also: Pyrethrum
Example sentences
I actually remember the first time I used Wikipedia, in '02 or '03, while researching pyrethrum insecticide in high school.
When I compared the organic chemicals copper sulfate and pyrethrum to the top synthetics, chlorpyrifos and chlorothalonil, I found that not only were the organic ones more acutely toxic, studies have found that they are more chronically toxic as well, and have higher negative impacts on non-target species.
Organic pesticides include rotenone, which has been shown to cause the symptoms of Parkinson's Disease and is a natural poison used in hunting by some native tribes; pyrethrum, which is carcinogenic; sabadilla, which is highly toxic to honeybees; and fermented urine, which I don't want on my food whether it causes any diseases or not.
Frequently asked questions
Short answers drawn from the clearest meanings and examples for this word.
How do you use pyrethrum in a sentence?
I actually remember the first time I used Wikipedia, in '02 or '03, while researching pyrethrum insecticide in high school.
What does pyrethrum mean?
made of dried flower heads of pyrethrum plants
What part of speech is pyrethrum?
pyrethrum is commonly used as noun.