titanium dioxide

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noun Chemistry.

a white, water-insoluble powder, TiO2, used chiefly in white pigments, plastics, ceramics, and for delustering synthetic fibers.

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Also called titanium oxide, ti·tan·ic ox·ide

[tahy-tan-ik, ti-]. /taɪˈtæn ɪk, tɪ-/.

Origin of titanium dioxide

First recorded in 1920–25

Words nearby titanium dioxide

titanic oxide, titaniferous, Titanism, titanite, titanium, titanium dioxide, titanium white, Titanomachy, titanosaur, titanothere, titanous

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use titanium dioxide in a sentence

Physical formulas use minerals—typically zinc or titanium dioxide—to create a physical barrier against the sun’s rays, while the latter use chemicals such as oxybenzone, avobenzone, octinoxate and homosalate to absorb UV light.
Almost Every Doctor Recommends Sunscreen. So Why Don't We Know More About Its Safety?|Jamie Ducharme|August 2, 2021|Time
The pellets are, as before, coated in titanium dioxide and stearin, making them resemble tiny, irregular Tic-Tacs, which can then be mixed with salt.
One man’s crusade to end a global scourge with better salt|Katie McLean|December 18, 2020|MIT Technology Review
It reacts very readily with oxygen by burning smokelessly, with carbon dioxide and water as its byproducts.
Methane on Mars: Life or Just Gas?|Matthew R. Francis|December 17, 2014|DAILY BEAST
Other psychiatrists attempted to treat schizophrenia with carbon dioxide gas and artificially-induced comas.
Schizophrenia Isn’t One Disorder but Eight|Samantha Allen|September 16, 2014|DAILY BEAST

The higher levels of carbon dioxide will induce something of a feeding frenzy for plants, at least for a while.
Blame Climate Change for Your Terrible Seasonal Allergies|Kent Sepkowitz|May 14, 2014|DAILY BEAST
Grosvenor Place, which runs alongside the palace, has almost four times the maximum permissible amount of nitrogen dioxide.
Pollution At The Palace|Tom Sykes|February 24, 2014|DAILY BEAST
“We are short of carbon dioxide for the needs of the plants,” Anderson said.
Fringe Factor: More Carbon Dioxide, Please|Caitlin Dickson|February 23, 2014|DAILY BEAST
The primary purpose of respiration in all animals is the same—namely, to furnish oxygen and remove carbon dioxide (carbonic acid).
Voice Production in Singing and Speaking|Wesley Mills
If we collect enough of these bubbles of gas to make a test, we find it to be carbon dioxide.
A Civic Biology|George William Hunter
In previous experiments we have proved that carbon dioxide is given off by any living thing when oxidation occurs in the body.
A Civic Biology|George William Hunter
The plants give off oxygen to the animals, and the animals give carbon dioxide to the plants.
A Civic Biology|George William Hunter
The organs of respiration: the organs in which the blood receives oxygen and gives up carbon dioxide.
A Civic Biology|George William Hunter

British Dictionary definitions for titanium dioxide

titanium dioxide

noun

a white insoluble powder occurring naturally as rutile and used chiefly as a pigment of high covering power and durability. Formula: TiO 2Also called: titanium oxide, titanic oxide, titania

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

Scientific definitions for titanium dioxide

titanium dioxide

A white powder used as an opaque white pigment. It occurs naturally as the mineral rutile. Chemical formula: TiO2.