Sexagenarian Definition
 sĕksə-jə-nârē-ən 
    noun
  
 A sexagenarian person.
 Webster's New World 
    adjective
  
 60 years old, or between the ages of 60 and 70
 Webster's New World 
Of or relating to a sexagenarian.
 American Heritage 
Other Word Forms of Sexagenarian
Noun
Singular:
 sexagenarianPlural:
 sexagenariansOrigin of Sexagenarian
-  From Latin sexāgēnārius sexagenary sexagenary From American Heritage Dictionary of the English Language, 5th Edition 
-  From Latin sexaginta (“sixty") From Wiktionary 
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