'Septuagenarian' definitions:

Definition of 'septuagenarian'

From: WordNet
noun
Someone whose age is in the seventies

Definition of 'Septuagenarian'

From: GCIDE
  • Septuagenarian \Sep`tu*a*ge*na"ri*an\, n. A person who is seventy years of age; a septuagenary. [1913 Webster]

Synonyms of 'septuagenarian'

From: Moby Thesaurus