hydroxide=الهيدروكسيد

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hydroxide=الهيدروكسيد

ONLINE ETYMOLOGY DICTIONARY:

hydroxide (n.)

1851, from hydro- + oxide.

hydro-

before vowels hydr-, word-forming element meaning "water," from Gk. hydro-, comb. form of hydor "water" (see water (n.1)). Also sometimes a comb. form of hydrogen.

oxide (n.)

"compound of oxygen with another element," 1790, from Fr. oxide (1787), coined by G. de Morveau and A. Lavoisier from ox(ygène) (see oxygen) + (ac)ide "acid" (see acid).

oxygen (n.)

gaseous chemical element, 1790, from Fr. oxygène, coined in 1777 by French chemist Antoine-Laurent Lavoisier (1743-1794), from Gk. oxys "sharp, acid" (see acrid) + Fr. -gène "something that produces" (from Gk. -genes "formation, creation;" see -gen).

Intended to mean "acidifying (principle)," it was a Greeking of Fr. principe acidifiant. So called because oxygen was then considered essential in the formation of acids (it is now known not to be). The element was isolated by Priestley (1774), who, using the old model of chemistry, called it dephlogisticated air. The downfall of the phlogiston theory required a new name, which Lavoisier provided.