01 a. Consisting of seventy days, years, etc.; reckoned by seventies.
-
1.
Consisting of seventy days, years, etc.; reckoned by seventies.“Our abridged and septuagesimal age.” — Sir T. Browne.
Entry
1 sense
Webster, 1913
Septuagesimal
· Sep·tu·a·ges·i·mal
· IPA /ˌsɛptjuəˈd͡ʒɛsɪməl/