The cardinal number immediately following seventy-eight and preceding eighty.

The cardinal number immediately following seventy-five and preceding seventy-seven.

The cardinal number immediately following seventy and preceding seventy-two.

(Judaism, Islam) The outermost of the heavenly spheres; a dwelling of the angels. / A state of great joy and satisfaction.

From or evoking the 71st through 80th years of a century (chiefly the 1970s).

The decade of the 1870s, 1970s, etc. / The decade of one's life from age 70 through age 79. / (temperature, rates, plural only) The range between 70 and 79.

plural of seventy

The start of the eighteenth hour of the day on the 24-hour clock i.e. 17:00. / The number one thousand seven hundred. / The year 1700.

By a factor of seven.

Seven times as much; multiplied by seven. / Having seven parts; composed of seven items.