Definition of "titanium dioxide" []

• A white powder, TiO2, used as an exceptionally opaque white pigment. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "There are also new questions arising regarding the safety of nano-sized titanium dioxide TiO2."
• "Most of them contain titanium dioxide in a variety of densities, meaning some are a semidull luster, others dull, a few bright."
• "Iluka rose 11% after it said it expects strong price increases from its customers for titanium dioxide and zircon."