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)

---

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.)

Compare meaning

How does isaac compare to similar and commonly confused words? Explore the most common comparisons:

• Ishmael vs. Isaac

Example Sentences

“A major driver of the decline was a drop in the number of people traveling from out of state into Florida to access care,” Isaac Maddow-Zimet, a data scientist at the Guttmacher Institute, told Salon.

From Salon • May 5, 2026

Isaac Martinez has been as a cook at SoFi Stadium for four years.

From Los Angeles Times • May 1, 2026

Isaac said he was screaming at members of the public to stay out of the way.

From BBC • Apr. 30, 2026

In fact, full-year earnings forecasts for Fair Isaac, MSCI, and Moody’s are higher now than they were at the end of December.

From Barron's • Apr. 28, 2026

Isaac had survived the deadly battle and witnessed history.

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