Noun
- 1. cerium, Ce, atomic number 58, metallic element, metal
- usage: a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group
Adverb
- 1. CE, C.E., Common Era
- usage: of the period coinciding with the Christian era; preferred by some writers who are not Christians; "in 200 CE"
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