There are four varieties of commercially viable coffee: Arabica, Liberica, Excelsa, and Robusta. Growers predominantly plant the Arabica species. Although less popular, Robusta tastes slightly more bitter and contains more caffeine.
PYRETHRUM
Pyrethrum, genus Pyrethrum
(noun) used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum
pyrethrum, Dalmatian pyrethrum, Dalmatia pyrethrum, Tanacetum cinerariifolium, Chrysanthemum cinerariifolium
(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
pyrethrum
(noun) made of dried flower heads of pyrethrum plants
Source: WordNet® 3.1
Etymology
Noun
pyrethrum (countable and uncountable, plural pyrethrums)
Any of several daisy-like perennial African plants of the genus Tanacetum, especially Tanacetum cinerariifolium. [from 10th c.]
Anacyclus pyrethrum (pellitory of Spain)
(organic compound) Any of several insecticides obtained from these plants; pyrethrin.
Source: Wiktionary
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25 November 2024
ONCHOCERCIASIS
(noun) infestation with slender threadlike roundworms (filaria) deposited under the skin by the bite of black fleas; when the eyes are involved it can result in blindness; common in Africa and tropical America
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