vigintillion

noun, often attributive vi·gin·til·lion \ ˌvī-ˌjin-ˈtil-yən \

Definition of vigintillion

US :a number equal to 1 followed by 63 zeros — see Table of Numbers; alsoBritish :a number equal to 1 followed by 120 zeros — see Table of Numbers

Origin and Etymology of vigintillion

Latin viginti twenty + English -illion (as in million) — more at vigesimal

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to conform or adhere

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