trillionth
-
a word derived from
trillion.
trillionnouna 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
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
This approach relies on cascaded second-harmonic generation within nonlinear crystals, producing UV-C pulses that last only femtoseconds, less than 1 trillionth of a second.
From Science Daily ● Jan. 7, 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
![]()