What does pyrethrum mean?

Definitions for pyrethrum
paɪˈri θrəm, -ˈrɛθ rəmpyrethrum

This dictionary definitions page includes all the possible meanings, example usage and translations of the word pyrethrum.

Princeton's WordNet

  1. pyrethrumnoun

    made of dried flower heads of pyrethrum plants

  2. pyrethrum, Dalmatian pyrethrum, Dalmatia pyrethrum, Tanacetum cinerariifolium, Chrysanthemum cinerariifoliumnoun

    white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum

  3. painted daisy, pyrethrum, Tanacetum coccineum, Chrysanthemum coccineumnoun

    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

  4. Pyrethrum, genus Pyrethrumnoun

    used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum

Wiktionary

  1. pyrethrumnoun

    Any of several perennial African plants of the genus Chrysanthemum, especially Chrysanthemum cinerariaefolium

  2. pyrethrumnoun

    Any of several insecticides obtained from these plants; pyrethrin

ChatGPT

  1. pyrethrum

    Pyrethrum is a type of natural insecticide derived from the dried flower heads of plants, primarily Chrysanthemum cinerariifolium and Chrysanthemum coccineum. It contains compounds known as pyrethrins, which are toxic to insects but have low toxicity towards mammals and birds. Pyrethrum is widely used in organic farming and home pest control because of its relatively low environmental impact.

Wikidata

  1. Pyrethrum

    Pyrethrum refers to several Old World plants of the genus Chrysanthemum which are cultivated as ornamentals for their showy flower heads. Pyrethrum is also the name of a natural insecticide made from the dried flower heads of Chrysanthemum cinerariifolium and Chrysanthemum coccineum.

Chambers 20th Century Dictionary

  1. Pyrethrum

    pir-eth′rum, n. a genus of plants containing the fever-few, or golden-feather, so much used in gardens as a bordering. [L.,—Gr.,—pyr, fire.]

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Numerology

  1. Chaldean Numerology

    The numerical value of pyrethrum in Chaldean Numerology is: 1

  2. Pythagorean Numerology

    The numerical value of pyrethrum in Pythagorean Numerology is: 9

Popularity rank by frequency of use

pyrethrum#100000#136620#333333

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"pyrethrum." Definitions.net. STANDS4 LLC, 2024. Web. 28 Mar. 2024. <https://www.definitions.net/definition/pyrethrum>.

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