retinol (countable and uncountable, plural retinols)
(organic compound, biochemistry) A fat-soluble carotenoid vitamin (vitamin A), present in fish oils and green vegetables, essential to normal vision and to bone development.
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Source: Wiktionary
Ret"i*nol, n. Etym: [Gr. oleum oil.] (Chem.)
Definition: A hydrocarbon oil obtained by the distillation of resin, -- used in printer's ink.
Source: Webster’s Unabridged Dictionary 1913 Edition
25 November 2024
(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
The earliest credible evidence of coffee-drinking as the modern beverage appeared in modern-day Yemen. In the middle of the 15th century in Sufi shrines where coffee seeds were first roasted and brewed for drinking. The Yemenis procured the coffee beans from the Ethiopian Highlands.
