cerium oxide

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Related to Cerium(IV) oxide: Ceria

cerium oxide 

A pink powder derived from the metallic element cerium. It is used to polish lenses and it is also added to ophthalmic glass to absorb ultraviolet radiations. See polishing.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann