Noah Webster
Sexagenary
SEX'AGENARY, adjective [L. sexagenarius, from sex, six, and a word signifying ten, seen in viginti; bis-genti.] Designating the number sixty; as a noun, a person sixty years of age; also, something composed of sixty.
SEX'AGENARY, adjective [L. sexagenarius, from sex, six, and a word signifying ten, seen in viginti; bis-genti.] Designating the number sixty; as a noun, a person sixty years of age; also, something composed of sixty.