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sexagenarian

[sek-suh-juh-nair-ee-uh n]
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adjective
  1. of the age of 60 years or between 60 and 70 years old.
noun
  1. a sexagenarian person.

Origin of sexagenarian

1730–40; < Latin sexāgēnāri(us) sexagenary + -an
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for sexagenarian

sexagenarian

noun
  1. a person from 60 to 69 years old
adjective
  1. being from 60 to 69 years old
  2. of or relating to a sexagenarian
Derived Formssexagenary (sɛkˈsædʒɪnərɪ), adjective, noun

Word Origin

C18: from Latin sexāgēnārius, from sexāgēnī sixty each, from sexāgintā sixty
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for sexagenarian

n.

1738, "person sixty years old," from Latin sexagenarius "containing sixty," from sexagenarius, from sexageni "sixty each, sixty at a time," from sexaginta "sixty," from comb. form of sex (see six) + -genaria "ten times," from -ginta "tens," from PIE *dkm-ta-, from *dekm- "ten" (see ten). As an adjective from 1836.

Online Etymology Dictionary, © 2010 Douglas Harper

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