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WordNet (r) 3.0 (2006) (WordNet)

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