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trillionth

  • a word derived from trillion.
    trillion
    noun
    a cardinal number represented in the U.S. by 1 followed by 12 zeros, and in Great Britain by 1 followed by 18 zeros.

Example Sentences

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Researchers in Finland have achieved a major advance in ultra-sensitive measurement technology by detecting an amount of energy smaller than one zeptojoule, less than a trillionth of a billionth of a joule.

From Science Daily ● May 21, 2026

And it needed the world’s biggest atom smasher CERN’s Large Hadron Collider to produce the extreme surge of energies simulating those 1 trillionth to 2 trillionths of a second after the Big Bang.

From Seattle Times ● Apr. 9, 2024

The Big Bang theory postulates that the universe was inflated from a microscopic speck in a trillionth of a trillionth of a trillionth of a second, at a temperature of trillions degrees centigrade.

From Washington Post ● Jan. 28, 2023

The pangram from yesterday’s Spelling Bee was trillionth.

From New York Times ● Dec. 31, 2022

According to Guth’s theory, at one ten-millionth of a trillionth of a trillionth of a trillionth of a second, gravity emerged.

From "A Short History of Nearly Everything" by Bill Bryson

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