### Definition of Quintillion

1. Noun. The number that is represented as a one followed by 18 zeros.

### Definition of Quintillion

1. Cardinal numeral. (US modern British & Australian, short scale) A billion billion: 1 followed by eighteen zeros, 1018. ¹

2. Cardinal numeral. (dated British & Australian, long scale) A million quadrillion: 1 followed by 30 zeros, 1030. ¹

3. Noun. (figuratively slang) Any very large number, exceeding normal description. ¹

¹ Source: wiktionary.com

1. [n -S]

### Quintillion Pictures

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### Lexicographical Neighbors of Quintillion

 quintetquintetsquintettquintettequintettesquintettoquintettosquintettsquinticquintic function quinticlavequinticlavesquinticsquintilequintilesquintillion (current term)quintillionfoldquintillionsquintillionthquintillionths quintinquintinequintinitequintinsquintiparaquintiparasquintolequintolesquintomquintoms

### Literary usage of Quintillion

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Retrospect of Medicine by William Braithwaite (1859)
"The subjoined arithmetical formula shows, first, the result when we divide a quintillion of grains (the number contained in the first line in the formula ..."

2. Homoeopathy: Its Tenets and Tendencies, Theoretical, Theological, and by James Young Simpson (1853)
"A quintillion divided by 240, the number of grains contained in a cubic inch of sugar, gives 4167 quadrillion cubic inches of sugar in the quintillion of ..."

3. The Popular Science Monthly by Harry Houdini Collection (Library of Congress) (1893)
"A quintillion of Aphides will, on this estimate, ... Huxley taken the actual weight, one twelfth of a grain, the quintillion of Aphides would evidently far ..."

4. Works by Herbert Spencer (1896)
"A quintillion of Aphides will, on this estimate, weigh a quatrillion of grains. He is a very stout man who weighs two million grains; consequently the tenth ..."

5. The Retrospect of Practical Medicine and Surgery: Being a Half-yearly by W Braithwaite, James Braithwaite (1859)
"A quintillion of grains is expressed arithmetically by unity followed by thirty ... 4167 quadrillion cubic inches of sugar in the quintillion of grains. ..."