octillion

(noun, numeral)

noun

1. the number that is represented as a one followed by 27 zeros

Definition categories: quantity

numeral

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.