thionine (countable and uncountable, plural thionines)
(chemistry) An artificial red or violet dyestuff consisting of a complex sulfur derivative of certain aromatic diamines.
(organic compound) The unsaturated nine-membered heterocycle having eight carbon atoms, one sulfur atom and four double bonds.
• phenylene violet
Source: Wiktionary
Thi"on*ine, n. Etym: [Gr. (Chem.)
Definition: An artificial red or violet dyestuff consisting of a complex sulphur derivative of certain aromatic diamines, and obtained as a dark crystalline powder; -- called also phenylene violet.
Source: Webster’s Unabridged Dictionary 1913 Edition
17 May 2025
(noun) sessile marine coelenterates including solitary and colonial polyps; the medusoid phase is entirely suppressed
The first coffee-house in Mecca dates back to the 1510s. The beverage was in Turkey by the 1530s. It appeared in Europe circa 1515-1519 and was introduced to England by 1650. By 1675 the country had more than 3,000 coffee houses, and coffee had replaced beer as a breakfast drink.
