nonillion

1. (US, modern British & Australian, short scale) 10³⁰.Examples: "As we have seen that one nought goes to each potency, for the thirtieth potency we will have for the denominator one followed by thirty noughts; or the original drop of drug in one nonillion drops of alcohol!"; "Do ya not be knowin' that there are 10 nonillion atoms within the likes of us?"; "The figure is 1,267,700,000,000,000,000,000,000,000,000. In layperson's terms, that's a little over 1.2 nonillion ancestors in the 100th generation."Synonyms: 1030US

2. (dated, British & Australian, long scale) 10⁵⁴.Examples: "The first six figures from the right hand are called the unit period, the next six the million period, after which the trillion, quadrillion, quintillion, sextillion, septillion, octillion, and nonillion periods, follow in their order."; "There may be stars placed at a distance from us so remote, that a body moving with a volicity (sic.) of a nonillion of miles in one second of time, would occupy a nonillion of years in passing from them to our earth!! [Footnote: A nonillion is a million nine times repeated; Its value is equal to unity followed by 54 cyphers.]"; "The odds against the observed event having a purely fortuitous origin are a ⁴trillion trillion trillion trillion trillion trillion (a nonillion nonillion) to one — odds to describe whose vastness "number fails." ⁴ As I understand, a million million is a billion, a million billion is a trillion, a million trillion is a quadrillion, and so on up to a nonillion."Synonyms: 1054dated