In 1884, Angelo Moriondo of Turin, Italy, demonstrated the first working example of an espresso machine.
ANION
anion
(noun) a negatively charged ion
Source: WordNet® 3.1
Etymology
Noun
anion (plural anions)
A negatively charged ion.
Anagrams
• NAION
Source: Wiktionary
An"i*on, n. Etym: [Gr. (Chem.)
Definition: An electro-negative element, or the element which, in electro- chemical decompositions, is evolved at the anode; -- opposed to cation. Faraday.
Source: Webster’s Unabridged Dictionary 1913 Edition
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12 June 2025
RAREFACTION
(noun) a decrease in the density of something; “a sound wave causes periodic rarefactions in its medium”
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