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Isaac

American  
[ahy-zuhk] / ˈaɪ zək /

noun

  1. (in the Bible) a son of Abraham and Sarah, and the father of Jacob.

  2. a male given name: from a Hebrew word meaning “laughter.”


Isaac British  
/ ˈaɪzək /

noun

  1. 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

Isaac Cultural  
  1. The son of Abraham and the father of Jacob and Esau.


Discover More

Abraham was prepared to sacrifice Isaac at God's request. (See Abraham and Isaac.)

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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On a cold November morning, designer Isaac Mizrahi gets up, leaves his apartment, and trudges to the corner newsstand to pick up a copy of Women’s Wear Daily.

From Salon Sep. 5, 2026

It also helps Stanmore avoid up to US$60 million in deferred and contingent acquisition payments that would be owing once the Isaac Downs Extension is developed, the broker says.

From The Wall Street Journal Sep. 4, 2026

Israeli President Isaac Herzog hailed the "loyalty and devotion" of Harald, who early in his reign supported the landmark Oslo Accords between Israel and the Palestinians.

From Barron's Aug. 28, 2026

Byron’s son, Isaac, played tight end at San Clemente and BYU, and another son, Preston, is a senior running back at BYU.

From Los Angeles Times Aug. 26, 2026

Isaac Post found a new kind of mediumship, no rapping needed.

From "American Spirits" by Barb Rosenstock

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