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oc·to·de·cil·lion | \ ˌäk-tō-di-ˈsil-yən 
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\Definition of octodecillion
US : a number equal to 1 followed by 57 zeros — see Table of Numbers also, British : a number equal to 1 followed by 108 zeros — see Table of Numbers
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Time Traveler for octodecillion
The first known use of octodecillion was in 1848
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