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Webster 1913 Edition


Octillion

Oc-til′lion

,
Noun.
[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
.

Definition 2024


octillion

octillion

English

Numeral

octillion

  1. (US, modern Britain and Australia, short scale) A thousand trillion trillion, a billion billion billion: 1 followed by 27 zeros, 1027.
  2. (dated Britain and Australia, long scale) A quadrillion quintillion: 1 followed by 48 zeros, 1048.

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