
1) Compound in ceramics 2) English girl name 3) Glass-polishing compound 4) Glass-polishing powder
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https://www.crosswordclues.com/clue/ceria

• (n.) Cerium oxide, CeO2, a white infusible substance constituting about one per cent of the material of the common incandescent mantle.
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http://thinkexist.com/dictionary/meaning/ceria/
Ce'ri·a (sē'rĭ*ȧ)
noun (Chemistry) Cerium oxide, CeO
2 , a white infusible substance constituting about one per cent of the material of the common incandescent mantle.
Found on
http://www.encyclo.co.uk/webster/C/47

a white-to-yellow, heavy powder, cerium dioxide, CeO, usually derived from cerium nitrate by decomposition with heat: used chiefly in ceramics, glass polishing, and decolorizing.
Found on
https://www.infoplease.com/dictionary/ceria
No exact match found.