[ahy-zuh k]


a son of Abraham and Sarah, and father of Jacob. Gen. 21:1–4.
a male given name: from a Hebrew word meaning “laughter.” Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for isaac

Contemporary Examples of isaac

Historical Examples of isaac

  • No fear but what Isaac will do well in the world and be a rich man before he dies.

    Biographical Stories

    Nathaniel Hawthorne

  • Among the officers who came and spoke to us, was an admiral, Sir Isaac Coffin.

    Ned Myers

    James Fenimore Cooper

  • This remark is exemplified in the history of Isaac and Rebekah.

  • Isaac dropped the goblet he was about to drain, and fell upon his knees.

    Leila, Complete

    Edward Bulwer-Lytton

  • Isaac knew the temperature of his frames to the twentieth part of a degree.

    The Black Tulip

    Alexandre Dumas (Pere)

British Dictionary definitions for isaac



an Old Testament patriarch, the son of Abraham and Sarah and father of Jacob and Esau (Genesis 17; 21–27)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for isaac


masc. proper name, name of a biblical patriarch, from Late Latin, from Greek Isaak, from Hebrew Yitzhaq, literally "he laughs," imperf. of tzahaq "he laughed."

Online Etymology Dictionary, © 2010 Douglas Harper

isaac in Culture


The son of Abraham and the father of Jacob and Esau.


Abraham was prepared to sacrifice Isaac at God's request. (See Abraham and Isaac.)
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.