Definition of Pyrethrum. Meaning of Pyrethrum. Synonyms of Pyrethrum

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Definition of Pyrethrum

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Anacyclus Pyrethrum
Pellitory Pel"li*to*ry, n. [Sp. pelitre, fr. L. pyrethrum. See Bertram.] (Bot.) (a) A composite plant (Anacyclus Pyrethrum) of the Mediterranean region, having finely divided leaves and whitish flowers. The root is the officinal pellitory, and is used as an irritant and sialogogue. Called also bertram, and pellitory of Spain. (b) The feverfew (Chrysanthemum Parthenium); -- so called because it resembles the above.
Anacyclus pyrethrum
Pyrethrine Pyr"eth*rine, n. (Chem.) An alkaloid extracted from the root of the pellitory of Spain (Anacyclus pyrethrum).
Anacyclus pyrethrum
Bertram Ber"tram, n. [Corrupted fr. L. pyrethrum, Gr. ? a hot spicy plant, fr. ? fire.] (Bot.) Pellitory of Spain (Anacyclus pyrethrum).
Pyrethrum camphor
Pyrethrin Pyr"eth*rin, n. [NL. Pyrethrum, generic name of feverfew, Gr. ? feverfew.] (Chem.) A substance resembling, and isomeric with, ordinary camphor, and extracted from the essential oil of feverfew; -- called also Pyrethrum camphor.
Pyrethrum or Chrysanthemum Parthenium
Feverfew Fe"ver*few, n. [AS. feferfuge, fr. L. febrifugia. See fever, Fugitive, and cf. Febrifuge.] (Bot.) A perennial plant (Pyrethrum, or Chrysanthemum, Parthenium) allied to camomile, having finely divided leaves and white blossoms; -- so named from its supposed febrifugal qualities.

Meaning of Pyrethrum from wikipedia

- showy flower heads. Pyrethrum continues to be used as a common name for plants formerly included in the genus Pyrethrum. Pyrethrum is also the name of...
- Anacyclus pyrethrum, the pellitory, Spanish chamomile, Mount Atlas daisy, bertram, or Akarkara, is a species of flowering plant in the daisy family Asteraceae...
- plant in the aster family, Asteraceae, and formerly part of the genus Pyrethrum, but now placed in the genus Chrysanthemum, or the genus Tanacetum by...
- also known as Persian pellitory, insect powder and internationally as pyrethrum. Persian powder is a green pesticide that has been used for centuries...
- and may be identified by its synonyms, Chrysanthemum parthenium and Pyrethrum parthenium. It is used in traditional medicine. The plant is a herbaceous...
- diseases. The pyrethrins occur in the seed cases of the perennial plant pyrethrum (Chrysanthemum cinerariaefolium), which has long been grown commercially...
- usually made into a spiral, and typically made using dried paste of pyrethrum powder. The coil is usually held at the center of the spiral, suspending...
- similar to the natural pyrethrins, which are produced by the flowers of pyrethrums (Chrysanthemum cinerariaefolium and C. coccineum). Pyrethroids are used...
- Bip. – Dalmatian insect-flower, Dalmatian pyrethrum Tanacetum coccineum (Willd.) Griersongarden pyrethrum, painted daisy, Persian insect-flower, Persian...
- anethifolium Brouss. ex Willd. Chrysanthemum crithmifolium Brouss. ex Buch Chrysanthemum foeniculaceum (Willd.) Brouss. ex Steud. Pyrethrum foeniculaceum Willd....