octillion


From The Collaborative International Dictionary of English v.0.48:

Octillion \Oc*til"lion\, n. [L. octo eight + -illion, as in E.
   million: cf. F. octillion.]
   According to the French method of numeration (which method is
   followed also in the United States) the number expressed by a
   unit with twenty-seven ciphers annexed. According to the
   English method, the number expressed by a unit with
   forty-eight ciphers annexed. See Numeration.
   [1913 Webster] Octo
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