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Definition of quadrillion number from the Oxford Advanced Learner's Dictionary

quadrillion

number

/kwɒˈdrɪljən/

/kwɑːˈdrɪljən/

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the number 1015, or 1 followed by 15 zeros
Word Originlate 17th cent.: from French, from million, by substitution of the prefix quadri- ‘four’ for the initial letters.

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See quadrillion in the Oxford Advanced American Dictionary

Check pronunciation: quadrillion

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noun

From the Topic

C2

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