seventy

American  

[sev-uhn-tee] / ˈsɛv ən ti /

noun

plural

seventies

1. a cardinal number, 10 times 7.

2. a symbol for this number, as 70 or LXX.

3. a set of this many persons or things.

4. seventies, the numbers, years, degrees, or the like from 70 through 79, as in referring to numbered streets, indicating the years of a lifetime or of a century, or referring to degrees of temperature.

   They live in the Seventies. His uncle is in his early seventies. It was in the seventies yesterday.

5. the Seventy, the body of scholars who produced the Septuagint.

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adjective

1. amounting to 70 in number.

seventy British  

/ ˈsɛvəntɪ /

noun

1. the cardinal number that is the product of ten and seven See also number

2. a numeral, 70, LXX, etc, representing this number

3. (plural) the numbers 70–79, esp the 70th to the 79th year of a person's life or of a particular century

4. the amount or quantity that is seven times as big as ten

5. something represented by, representing, or consisting of 70 units

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determiner

1. 1. amounting to seventy

      the seventy varieties of fabric

   2. ( as pronoun )

      to invite seventy to the wedding

Etymology

Origin of seventy

1150–1200; Middle English; Old English seofontig. See seven, -ty ¹

Example Sentences

"It was a wonderful moment," even if seventy percent of the people there were strangers, Michael told Israel's Channel 13.

From Barron's • Mar. 8, 2026

This is still well short of the previous longest wet spell in Cardinham of seventy two days recorded in 2000.

From BBC • Feb. 18, 2026

Among the seventy invitees were Farah Diba Pahlavi, widow of Iran’s last shah, former French culture minister Frédéric Mitterrand, and a scattering of aristocrats and artists.

From The Wall Street Journal • Oct. 18, 2025

The application of boron in organic chemistry dates back some seventy years and was awarded a Nobel Prize for Chemistry in 1979.

From Science Daily • May 8, 2024

The average human heart beats seventy times a minute.

From "A Heart in a Body in the World" by Deb Caletti