Septuagenarian

[,septjʊədʒɪ'neərɪən] or [,sɛptʃuədʒə'nɛrɪən]

(noun.) someone whose age is in the seventies.

Checker: Presley--From WordNet

(n.) A person who is seventy years of age; a septuagenary.

Editor: Mary

n. a person seventy years old.—adj. Septūag′enary consisting of seventy.—n. one seventy years old.

Typed by Lesley