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Sep·tu·a·gint       (sěp'tōō-ə-jĭnt', sěp-tōō'ə-jənt, -tyōō'-)  Pronunciation Key  n.   A Greek version of the Hebrew Scriptures that dates from the 3rd century B.C., containing both a translation of the Hebrew and additional and variant material, regarded as the standard form of the Old Testament in the early Christian Church and still canonical in the Eastern Orthodox Church. [Latin septuāgintā, seventy (from the traditional number of its translators) : septem, seven; see sept in Indo-European roots + -gintā, ten times; see dek in Indo-European roots.] Sep'tu·a·gin'tal (-jĭn'təl) adj.

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Septuagint 

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septuagint

noun

the oldest Greek version of the Old Testament; said to have been translated from the Hebrew by Jewish scholars at the request of Ptolemy II

Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Septuagint

Sep"tu*a*gint\, n. [From L. septuaginta seventy.] A Greek version of the Old Testament; -- so called because it was believed to be the work of seventy (or rather of seventy-two) translators.

Note: The causes which produced it [the Septuagint], the number and names of the translators, the times at which different portions were translated, are all uncertain. The only point in which all agree is that Alexandria was the birthplace of the version. On one other point there is a near agreement, namely, as to time, that the version was made, or at least commenced, in the time of the early Ptolemies, in the first half of the third century b.c. --Dr. W. Smith (Bib. Dict.)

Septuagint chronology, the chronology founded upon the dates of the Septuagint, which makes 1500 years more from the creation to Abraham than the Hebrew Bible.