In 1884, Angelo Moriondo of Turin, Italy, demonstrated the first working example of an espresso machine.
DIVALENT
bivalent, divalent
(adjective) having a valence of two or having two valences
Source: WordNet® 3.1
Etymology
Adjective
divalent (not comparable)
(chemistry) Having an atomic valence of 2.
(medicine) Having a vaccine valence of 2.
Source: Wiktionary
Div"a*lent, a. Etym: [Pref. di- + L. valens, valentis, p. pr. See Valence.] (Chem.)
Definition: Having two units of combining power; bivalent. Cf. Valence.
Source: Webster’s Unabridged Dictionary 1913 Edition
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Word of the Day
30 December 2024
DELUSIVE
(adjective) inappropriate to reality or facts; “delusive faith in a wonder drug”; “delusive expectations”; “false hopes”
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