A unit of frequency equal to one cycle per second. See Table at measurement.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "hertz" in a sentence
"(A hertz is a unit for measuring frequency at which power is transmitted from a plant to the user.)"
"The book briefly vibrates at eighteen hertz, which is the resonant frequency of the human eyeball."
"Its call is at 52 hertz, which is roughly that of New Scientist informs us that blue whales call out at 15-20 hertz."