(n.) According to the method of numeration (which is followed also in the United States), the number expressed by a unit with twenty-one ciphers annexed. According to the English method, a million raised to the sixth power, or the number expressed by a unit with thirty-six ciphers annexed. See Numeration.

astronomical number billion decillion duodecillion googolplex infinitude infinity jillion large number nonillion novemdecillion octillion octodecillion quadrillion quattuordecillion quindecillion quintillion septillion sexdecillion sextillion tredecillion trillion undecillion vigintillion zillion