Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'Septuagint'< L septuaginta, seventy: because of the ancient tradition that it was completed in 70 (or 72) days
by 72 Palestinian Jews for Ptolemy II of Egypt