Seventieth :: Seventieth (a.) Next in order after the sixty-ninth; as, a man in the seventieth year of his age..
Seventieth :: Seventieth (a.) Constituting or being one of seventy equal parts.
Seventieth :: Seventieth (n.) One next in order after the sixty-ninth.
Seventieth :: Seventieth (n.) The quotient of a unit divided by seventy; one of seventy equal parts or fractions.