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picosecond

American  
[pee-kuh-sek-uhnd, pahy-] / ˈpi kəˌsɛk ənd, ˈpaɪ- /

noun

  1. one trillionth of a second. ps, psec


picosecond British  
/ ˈpaɪkəʊ-, ˈpiːkəʊˌsɛkənd /

noun

  1. a million millionth of a second; 10 –12 second

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of picosecond

First recorded in 1965–70; pico- + second 2

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.

See Examples For:

The strength of the change was comparable to forcing an object to emit a completely different color, while the transformation occurred on the picosecond scale -- one billionth of a billionth of a second.

From Science Daily Jul. 31, 2026

After knocking out an electron from the neon atom using soft X-rays, they followed how the system evolved for up to a picosecond, which is extremely long on an atomic timescale, before the decay occurred.

From Science Daily Mar. 24, 2026

Using a visible laser pulse to trigger the switch, they sent a strong electrical current pulse lasting just one picosecond through the material.

From Science Daily Nov. 13, 2023

“In every picosecond of time,” Zinner said, “the basal ganglia have to decide what is relevant, what not to block out so you can survive.”

From Seattle Times Apr. 12, 2018

It was a point of view that caused him to break ranks with the supercomputing nobility, who for decades focused on building machines that calculated at picosecond intervals.

From New York Times Dec. 16, 2009

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