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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.

Isaac GRoot is Nvidia’s software for robot brains, running on Jetson Thor hardware.

From Barron's • Jun. 1, 2026

Texas State first baseman Jaquae Stewart booted the grounder for an error, allowing Isaac Cadena to score.

From Los Angeles Times • May 30, 2026

Researchers have spent more than 225 years trying to improve measurements of big G since Isaac Newton first described gravity mathematically.

From Science Daily • May 18, 2026

The country has also hosted Israeli President Isaac Herzog several times.

From The Wall Street Journal • May 14, 2026

Isaac Granger’s brother Bagwell is mentioned in Jefferson’s farm accounts, selling Jefferson skins, fish, duck, cucumbers, and watermelons.

From "In the Shadow of Liberty" by Kenneth C. Davis

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