Search Result for "septuagenarian": 
Wordnet 3.0

NOUN (1)

1. someone whose age is in the seventies; 



The Collaborative International Dictionary of English v.0.48:

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


WordNet (r) 3.0 (2006):

septuagenarian
    n 1: someone whose age is in the seventies