nonillion

noun, often attributive
no·​nil·​lion | \nō-ˈnil-yən \

Definition of nonillion 

US : a number equal to 1 followed by 30 zeros — see Table of Numbers also, British : a number equal to 1 followed by 54 zeros — see Table of Numbers

First Known Use of nonillion

1690, in the meaning defined above

History and Etymology for nonillion

French, from Latin nonus ninth + French -illion (as in million) — more at noon

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The first known use of nonillion was in 1690

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