noun, often attributive
duo·​de·​cil·​lion | \ ˌdü-ō-di-ˈsil-yən How to pronounce duodecillion (audio) , ˌdyü- \

Definition of duodecillion

US : a number equal to 1 followed by 39 zeros — see Table of Numbers also, British : a number equal to 1 followed by 72 zeros — see Table of Numbers

First Known Use of duodecillion

1844, in the meaning defined above

History and Etymology for duodecillion

Latin duodecim twelve + English -illion (as in million)

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The first known use of duodecillion was in 1844

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Cite this Entry

“Duodecillion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/duodecillion. Accessed 6 Jun. 2020.

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