picosecond

[pee-kuh-sek-uh nd, pahy-]

noun

one trillionth of a second. Abbreviation: ps, psec

Origin of picosecond

First recorded in 1965–70; pico- + second²

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British Dictionary definitions for picosecond

picosecond

noun

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

Word Origin and History for picosecond

1966, from pico- + second (n.).