titanium dioxide


Definition of titanium dioxide

: an oxide TiO2 of titanium that occurs in rutile, anatase, and ilmenite and is used especially as a pigment

Examples of titanium dioxide in a Sentence

Recent Examples on the Web

Others rely on broad-spectrum coverage provided by compounds like zinc oxide or titanium dioxide. Evelyn Crowley, Vogue, "The 6 Biggest Skincare Breakthroughs of 2018," 19 Dec. 2018 When trying to decide between zinc oxide and titanium dioxide, Brian Underwood, the beauty director at O, The Oprah Magazine, says to go for a product that has a mix of the two. Lindsey M. Roberts, The Seattle Times, "The best sunscreens for your skin — and the earth, too," 24 Aug. 2018 The shadows also include mica to blur imperfections by reflecting light, while titanium dioxide protects your skin from harmful UV rays. Tanisha Pina, Allure, "Dermstore’s Massive Labor Day Beauty Sale Has Already Started — Here’s What to Shop," 28 Aug. 2018 What to look for: No nanoparticles Free from chemicals like oxybenzone, butylparaben, octinoxate, octocrylene, and PABA Non-nano zinc oxide or non-nano titanium dioxide for UVA/UVB (broad spectrum) coverage Lotion or balm, not spray. Mandy Ferreira, Sunset, "10 Sunscreens That Keep You and the Coral Reefs Safe," 22 Jan. 2018 Mineral sunscreens—physical blockers with ingredients like zinc and titanium dioxide—should be applied at the end of your regimen, says Dr. Shah. Talia Abbas, SELF, "I Had a Dermatologist Critique My Skin-Care Routine—and Here's What I'm Changing," 20 June 2018 Prices for titanium dioxide—the company’s largest product line—stabilized just as Opteon took off, giving Chemours some needed momentum. Ken Otterbourg, Fortune, "Teflon’s River of Fear," 24 May 2018 Try to choose a physical sunscreen that contains zinc oxide and/or titanium dioxide, rather than chemical ingredients like oxybenzone and octyl methoxycinnamate. Dr. Leslie Baumann, miamiherald, "What are the best sunscreens for swimming and sports? | Miami Herald," 22 May 2018 Among the chemical sunscreen ingredients that wouldn't be affected by the ban are avobenzone, octisalate, octocrylene, and homosalate; there are also plenty of mineral sunscreen options that rely on zinc oxide and/or titanium dioxide. Marci Robin, Teen Vogue, "Hawaii State Legislature Passes Chemical Sunscreen Ingredients Bill," 3 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'titanium dioxide.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of titanium dioxide

1877, in the meaning defined above

Keep scrolling for more

Learn More about titanium dioxide

Share titanium dioxide

Statistics for titanium dioxide

Last Updated

7 Jan 2019

Look-up Popularity

Time Traveler for titanium dioxide

The first known use of titanium dioxide was in 1877

See more words from the same year

Keep scrolling for more

More Definitions for titanium dioxide

titanium dioxide


Medical Definition of titanium dioxide

: an oxide TiO2 of titanium that is used especially as a pigment and in sunblocks

More from Merriam-Webster on titanium dioxide

Britannica.com: Encyclopedia article about titanium dioxide

Comments on titanium dioxide

What made you want to look up titanium dioxide? Please tell us where you read or heard it (including the quote, if possible).


to express emotion in a dramatic way

Get Word of the Day daily email!

Test Your Vocabulary

What did you just call me?! A Quiz

  • rows-of-various-emoji
  • If a member of the audience describes your speech as bombastic, does that person mean it is:
Name That Thing

Test your visual vocabulary with our 10-question challenge!


Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!