CE CE /siː/

adverb

1. Of the period coinciding with the Christian era; preferred by some writers who are not Christians  ( C.E. , CE , Common Era )
   of the period coinciding with the Christian era; preferred by some writers who are not Christians
    In 200 CE
   in 200 CE
   

 Ce

noun

1. A ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group  ( atomic number 58 , Ce , cerium )
   a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group