Monod mo·nod uncommon noun 1. French biochemist who (with Francois Jacob) explained how genes are activated and suggested the existence of messenger RNA (1910-1976) SynonymsJacques MonodJacques Lucien Monod Related words Word family monodicmonodicalMonodonMonodontidaeMonodon monocerosmonody Broader terms biochemist WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.