Adjacent Words

quintillion definitions

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WordNet (r) 3.0 (2005)

n
1: the number that is represented as a one followed by 18 zeros

Merriam Webster's

noun Etymology: Latin quintus + English -illion (as in million) Date: 1674 — see number table • quintillion adjective • quintillionth adjective or noun

Oxford Reference Dictionary

n. (pl. same or quintillions) a thousand raised to the sixth (or formerly, esp. Brit., the tenth) power (10(18) and 10(30) respectively). Derivatives: quintillionth adj. & n. Etymology: L quintus fifth + MILLION