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zillion

noun [C]
 
 
/ˈzɪl.jən/ /-i.ən/ informal

Definition

an extremely large, but not a stated, number: I've told you a zillion times/zillions of times not to do that.Cardinal numbers, including nought and zero
(Definition of zillion noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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