quadrillion


qua·dril·lion

noun \kwä-ˈdril-yən\

: the number 1,000,000,000,000,000 : one thousand trillion

Full Definition of QUADRILLION

US :  a number equal to 1 followed by 15 zeros — see number table; also British :  a number equal to 1 followed by 24 zeros — see number table
quadrillion adjective
qua·dril·lionth \-yən(t)th\ adjective or noun

Origin of QUADRILLION

French, from Middle French, from quadri- + -illion (as in million)
First Known Use: circa 1690

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