dioxide

[dahy-ok-sahyd, -sid]

noun Chemistry.

an oxide containing two atoms of oxygen, each of which is bonded directly to an atom of a second element, as manganese dioxide, MnO2, or nitrogen dioxide, NO2.

Origin of dioxide

First recorded in 1840–50; di-¹ + oxide

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for dioxide

Historical Examples of dioxide

By this method a dilute solution of the dioxide in water is obtained.
An Elementary Study of Chemistry
William McPherson
It is a bluish-black powder which at high temperatures decomposes into the metal, dioxide and oxygen.
Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 7
Various
Dioxide, dī-oks′īd, n. an oxide containing two equivalents of oxygen to one of a metal.
Chambers's Twentieth Century Dictionary (part 1 of 4: A-D)
Various
By heating this dioxide in a current of oxygen, the metal may be obtained in the form of a powder of dark grey colour.
Cooley's Practical Receipts, Volume II
Arnold Cooley
In Fremys process for separating osmium from the residues of platinum ore, ruthenium occurs in a dioxide.
Cooley's Practical Receipts, Volume II
Arnold Cooley

British Dictionary definitions for dioxide

dioxide

noun

any oxide containing two oxygen atoms per molecule, both of which are bonded to an atom of another element
another name for a peroxide (def. 4)

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

dioxide in Medicine

dioxide

[dī-ŏk′sīd]

A compound containing two oxygen atoms per molecule.

dioxide in Science

dioxide

[dī-ŏk′sīd]

A compound containing two oxygen atoms per molecule.