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Definition of Jacob
1. Noun. French biochemist who (with Jacques Monod) studied regulatory processes in cells (born in 1920).
2. Noun. (Old Testament) son of Isaac; brother of Esau; father of the twelve patriarchs of Israel; Jacob wrestled with God and forced God to bless him, so God gave Jacob the new name of Israel (meaning 'one who has been strong against God').
Definition of Jacob
1. n. A Hebrew patriarch (son of Isaac, and ancestor of the Jews), who in a vision saw a ladder reaching up to heaven (Gen. xxviii. 12); -- also called Israel.