picosecond

[ pee-kuh-sek-uh nd, pahy- ]
/ ˈpi kəˌsɛk ənd, ˈpaɪ- /

noun

one trillionth of a second. Abbreviation: ps, psec

Origin of picosecond

First recorded in 1965–70; pico- + second2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for picosecond

picosecond

/ (ˈpiːkəʊˌsɛkənd, ˈpaɪkəʊ-) /

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