Oxide

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late 18th century: from French, from oxygène ‘oxygen’ + -ide (as in acide ‘acid’).

wiktionary

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Archaic French oxide (now oxyde), from a blend of ox(ygene) and (ac)ide, coined by G. de Morveau and A. Lavoisier. [1]

etymonline

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oxide (n.)

"compound of oxygen with another element," 1790, from French oxide (1787), coined by French chemists Louis-Bernard Guyton de Morveau and Antoine Lavoisier from ox(ygène) (see oxygen) + (ac)ide "acid" (see acid (n.)).