0 US /ˌɑːk.toʊ.dʒəˈner.i.ən/ UK /ˌɒk.təʊ.dʒəˈneə.ri.ən/ Longman Dictionary of Contemporary English octogenarian oc‧to‧ge‧nar‧i‧an /ˌɒktəʊdʒəˈneəriən, ˌɒktəʊdʒɪˈneəriən, -tə- $ ˌɑːktoʊ-/ BrE AmE noun [countable] [Date: 1800-1900; Language: Latin; Origin: octogenarius 'containing eighty', from octoginta 'eighty'] someone who is between 80 and 89 years old Oxford Advanced Learner's Dictionary octogenarian oc·to·gen·ar·ian [octogenarian octogenarians] [ˌɒktədʒəˈneəriən] [ˌɑːktədʒəˈneriən] noun a person between 80 and 89 years old Word Origin: early 19th cent.: from Latin octogenarius (based on octoginta ‘eighty’) + -an. Cambridge Advanced Learner's Dictionary Cambridge Advanced Learner's Dictionary - 4th Edition octogenarian / ˌɒk.təʊ.dʒəˈneə.ri.ən / / ˌɑːk.toʊ.dʒɪˈner.i- / noun [ C ] a person who is between 80 and 89 years old © Cambridge University Press 2013 Collins Advanced Learner’s English Dictionary octogenarian /ɒktoʊdʒɪneəriən/ (octogenarians) An octogenarian is a person who is between eighty and eighty-nine years old. N-COUNT Merriam-Webster's Advanced Learner's Dictionary octogenarian oc·to·ge·nar·i·an /ˌɑːktəʤəˈnerijən/ noun, pl -ans [count] : a person who is between 80 and 89 years old nounShortened URL: http://lngt.co/octogenarian1en