[mil-uh-sek-uh nd]


one thousandth of a second. Abbreviation: msec

Origin of millisecond

First recorded in 1905–10; milli- + second2 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for millisecond

nanosecond, flash, heartbeat, instant, jiffy, moment, twinkling, microsecond

Examples from the Web for millisecond

Contemporary Examples of millisecond

Historical Examples of millisecond

  • Now, fractions of a millisecond later, the Lady May was directly in line.

  • "Point six three eight seconds, sir," the Omans said, holding up a millisecond timer.

    Masters of Space

    Edward Elmer Smith

  • To get all that stuff and 'port up here in the millisecond or so we had the screens open?

    The Galaxy Primes

    Edward Elmer Smith

  • The telepaths were trained to become ultrasensitive, trained to become aware of the Dragons in less than a millisecond.

British Dictionary definitions for millisecond



one thousandth of a secondSymbol: ms
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 millisecond

"one thousandth of a second," 1922, from milli- + second (n.).

Online Etymology Dictionary, © 2010 Douglas Harper

millisecond in Medicine




One thousandth (10-3) of a second.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.