cen·te·nar·i·an /ˌsɛntəˈnɛriən/
  百歲或逾百歲以上的人(a.)百歲或逾百歲以上的
  Cen·te·na·ri·an a. Of or relating to a hundred years. -- n. A person a hundred years old.
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  centenarian
       adj : being at least 100 years old
       n : someone who is at least 100 years old