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 cardinal number occurring after sixty-nine and before seventy-one, represented in Roman numerals as LXX and in Arabic numerals as 70.

The translators of the Septuagint

The ordinal form of the number seventy-one, describing a person or thing in position number 71 of a sequence.

One of seventy-one equal parts of a whole.

The cardinal number immediately following seventy-four and preceding seventy-six.

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

A gramophone record designed to be rotated at 78 revolutions per minute; a 78