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Jacob

[ jey-kuhb for 1, 3; French zha-kawb for 2 ]
/ ˈdʒeɪ kəb for 1, 3; French ʒaˈkɔb for 2 /
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noun
the second son of Isaac, the twin brother of Esau, and father of the 12 patriarchs. Genesis 25:24–34.
Fran·çois [frahn-swa], /frɑ̃ˈswa/, 1920–2013, French geneticist: Nobel Prize in Medicine 1965.
a male given name: from a Hebrew word meaning “supplanter.”
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use Jacob in a sentence

British Dictionary definitions for Jacob

Jacob
/ (ˈdʒeɪkəb) /

noun
Old Testament the son of Isaac, twin brother of Esau, and father of the twelve patriarchs of Israel
Also called: Jacob sheep any of an ancient breed of sheep having a fleece with dark brown patches and two or four horns

Word Origin for Jacob

sense 2 in allusion to Genesis 30:40
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

Scientific definitions for Jacob

Jacob
[ zhä-kôb ]
François Born 1920

French geneticist who studied how genes control cellular activity by directing the synthesis of proteins. With Jacques Monod, he theorized that there are genes that regulate the activity of other, neighboring genes. They also proposed the existence of messenger RNA.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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