dioxide

[ dahy-ok-sahyd, -sid ]
/ daɪˈɒk saɪd, -sɪd /

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.

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earnest
full seriousness, as of intention or purpose.
a feeling of dread, anxiety, or anguish.
urgent character; imperativeness; insistence; importunateness.
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Origin of dioxide

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

Words nearby dioxide

diouf, diovular, diovulatory, dioxan, dioxane, dioxide, dioxin, dioxygenase, dip, dip circle, dip fault
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for dioxide

British Dictionary definitions for dioxide

dioxide
/ (daɪˈɒksaɪd) /

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

Medical definitions for dioxide

dioxide
[ dī-ŏk′sīd ]

n.

A compound containing two oxygen atoms per molecule.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for dioxide

dioxide
[ dī-ŏk′sīd ]

A compound containing two oxygen atoms per molecule.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.