centuriumcommon nounSyllable DecompositioncenturiumEtymologyexpandfrom Latin centum, 'hundred'.Definition1. Former name proposed for a hypothetical (at the time) transuranic element with atomic number 100, symbol Ct, now abandoned in favor of fermium.chimieexpandSynonymsfermiumcenturiuméka-erbiumunnilniliumHyperonymsélément chimiqueactinidetransuranienmétalTranslationsenglish:centurium