Decaffeinated coffee comes from a chemical process that takes out caffeine from the beans. Pharmaceutical and soda companies buy the extracted caffeine.
HYDROQUINONE
Etymology
Noun
hydroquinone (countable and uncountable, plural hydroquinones)
(organic compound) The diphenol para-dihydroxy benzene, used as a mild reducing agent in photographic developing; isomeric with catechol and resorcinol.
Source: Wiktionary
Hy`dro*qui"none, n. Etym: [Hydro-, 2 + quinone.] (Chem.)
Definition: A white crystalline substance, C6H4(OH)2, obtained by the reduction of quinone. It is a diacid phenol, resembling, and metameric with, pyrocatechin and resorcin. Called also dihydroxy benzene.
Source: Webster’s Unabridged Dictionary 1913 Edition
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7 June 2025
PARSEC
(noun) a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent to 3.262 light years
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