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quadrillion
(redirected from quadrillionths)

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quadrillion
One thousand times one trillion, which is 1, followed by 15 zeros, or 10 to the 15th power. See space/time.
quadrillion
1. (in Britain) the number represented as one followed by 24 zeros (1024)
2. (in the US and Canada) the number represented as one followed by 15 zeros (1015)
quadrillion [kwə′dril·yən]
(mathematics)
The number 1015.
In British and German usage, the number 1024.
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The laser emits 10 billion pulses per second, with each pulse lasting about 40 femtoseconds, or quadrillionths of a second, producing extra-wide spacing between individual comb teeth.
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The laser pulse lasted only 150 femtoseconds, or 150 quadrillionths of a second.
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