Entry 3 senses · 2 variants Webster, 1913 Seventy /sĕv'-ən-tē/ · Sev·en·ty · IPA /ˈsɛv.ən.di/ a. n. 01 a. Seven times ten; one more than sixty-nine. 1. Seven times ten; one more than sixty-nine. 02 n. The sum of seven times ten; seventy units or objects. pl. Seventies 1. The sum of seven times ten; seventy units or objects. 2. A symbol representing seventy units, as 70, or lxx. Phrases & compounds The Seventy — the translators of the Greek version of the Old Testament called the Septuagint. See Septuagint.