Octogenarian
/ˌɒk.tə.dʒəˈneə.ri.ən/noun
A person who is 80 to 89 years old.
Did you know?The word is built from Latin octogeni, meaning “eighty each,” and was modeled on ancient age-group terms that treated old age almost like a numbered threshold of status.
Etymological Timeline
Proto-Indo-European
PIE
*oktṓw
“eight”
Latin
Latin
octō
“eight”
Latin
Latin
octogēni
“eighty each; eighty at a time”
Late Latin
Latin
octōgenārius
“pertaining to eighty years; a person of eighty years”
English
English
octogenarian
“a person in their eighties”