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octillion

oc·til·lion [ ok tíllyən ] (plural oc·til·lions)


noun 
Definition:
 
1. 1 followed by 27 zeros: the number equal to 1027, written as 1 followed by 27 zeros

2. U.K. 1 followed by 48 zeros: the number equal to 1048, written as 1 followed by 48 zeros

[Late 17th century. <octo- + million]
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