n.
Pronunciation: ˌ sek-s ə -j ə - ' ner- ē - ə n
Function: noun
Etymology: Latin sexagenarius of or containing sixty, sixty years old, from sexageni sixty each, from sexaginta sixty, from sex six + -ginta (akin to Latin intransitive verb ginti twenty) ― more at SIX , VIGESIMAL
Date: 1738
: a person whose age is in the sixties
– sexagenarian adjective