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English definition of “septuagenarian”

septuagenarian

noun [C] uk   /ˌsep.tjʊə.dʒɪˈneə.ri.ən/ us    /-tu.ə.dʒəˈner.i-/
a person who is between 70 and 79 years oldThe elderlyOld or old-fashionedDescribing people who are oldDescribing age and birthdays
(Definition of septuagenarian from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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