tetroxide
(noun) an oxide containing four atoms of oxygen in the molecule
Source: WordNet® 3.1
tetroxide (plural tetroxides)
(chemistry) any oxide containing four oxygen atoms in each molecule
Source: Wiktionary
Tet*rox"ide, n. Etym: [Tetra- + oxide.] (Chem.)
Definition: An oxide having four atoms of oxygen in the molecule; a quadroxide; as, osmium tetroxide, OsO.
Source: Webster’s Unabridged Dictionary 1913 Edition
2 April 2025
(adjective) secret or hidden; not openly practiced or engaged in or shown or avowed; “covert actions by the CIA”; “covert funding for the rebels”
International Coffee Day (September 29) is an occasion to promote and celebrate coffee as a beverage, with events occurring in places across the world. A day to promote fair trade coffee and raise awareness for the coffee growers’ plight. Other countries celebrate this event on October 1.
