noun, plural kil·o·hertz, kil·o·hertz·es. Physics.

a unit of frequency, equal to 1000 cycles per second. Abbreviation: kHz

Compare kilocycle.

Origin of kilohertz

First recorded in 1925–30; kilo- + hertz Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for kilohertz



one thousand hertz; one thousand cycles per secondSymbol: kHz
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

Science definitions for kilohertz



A unit of frequency equal to 1,000 cycles per second (1,000 hertz). It is used in the measurement of radio, sound, and other waves.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.