dinoxiden.
Origin: A variant or alteration of another lexical item. Etymon: dioxide n.
Etymology: Alteration of dioxide n. after binoxide (1831 or earlier; < bin- prefix + oxide n., after French binoxide (1829 or earlier)).
1854 J. Scoffern in Chem. 495 Black Oxide (Suboxide or Dinoxide) of Mercury.
This entry has not yet been fully updated (first published 1896; most recently modified version published online March 2022).