In 1884, Angelo Moriondo of Turin, Italy, demonstrated the first working example of an espresso machine.
ketones
plural of ketone
Source: Wiktionary
Ke"tone, n. Etym: [Cf. Acetone.] (Chem.)
Definition: One of a large class of organic substances resembling the aldehydes, obtained by the distillation of certain salts of organic acids and consisting of carbonyl (CO) united with two hydrocarbon radicals. In general the ketones are colorless volatile liquids having a pungent ethereal odor.
Note: The ketones are named by adding the suffix-one to the stems of the organic acids from which they are respectively derived; thus, acetic acid gives acetone; butyric acid, butyrone, etc.
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
In 1884, Angelo Moriondo of Turin, Italy, demonstrated the first working example of an espresso machine.