/ Dictionary / Index K kilohertz: Meaning and Definition of Find definitions for: kil•o•hertz Pronunciation: (kil'u-hûrts"), [key] — pl. -hertz, -hertz•es. a unit of frequency, equal to 1000 cycles per second. Abbr.: kHz&hasp; Cf. kilocycle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: kilohertz (Thesaurus) kilogram-meter kiloliter Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language