sep·tu·a·ge·nar·i·an /(ˌ)sɛpˌtuəʤəˈnɛriən, ˌtju, ˌʧu-/ (a.)70歲者
Sep·tu·a·ge·na·ri·an n. A person who is seventy years of age; a septuagenary. ◄ ►
septuagenarian n : someone whose age is in the seventies