quadrillion
- Cardinal number. (US, modern British and Australian) A thousand trillion: 1 followed by fifteen zeros, 1015.
- Cardinal number. (dated, UK) A million trillion: 1 followed by twenty-four zeros, 1024.
- Noun. (figuratively, slang) Any very large number, exceeding normal description.
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This entry was last updated on RefTopia from its source on 3/20/2012.