Quar"ten*yl"ic, a. Etym: [Quartene + -yl + -ic.] (Chem.)
Definition: Pertaining to, or designating, an acid of the acrylic acid series, metameric with crotonic acid, and obtained as a colorless liquid; -- so called from having four carbon atoms in the molecule. Called also isocrotonic acid.
Source: Webster’s Unabridged Dictionary 1913 Edition
22 September 2024
(noun) a beginning from which an enterprise is launched; “he uses other people’s ideas as a springboard for his own”; “reality provides the jumping-off point for his illusions”; “the point of departure of international comparison cannot be an institution but must be the function it carries out”
Decaffeinated coffee is not caffeine-free. Studies from the National Institute of Health (US) have shown that virtually all decaf coffee types contain caffeine. A 236-ml (8-oz) cup of decaf coffee contains up to 7 mg of caffeine, whereas a regular cup provided 70-140 mg.
