1. (noun) a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group

• atomic number 58
• cerium

2. (adverb) of the period coinciding with the Christian era; preferred by some writers who are not Christians

• c.e.
• common era

1. (noun) a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group

• metal
• metallic element

1. (noun) a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group

• cerous