1
: any of several magnetic substances that consist essentially of ferric oxide combined with the oxides of one or more other metals (such as manganese, nickel, or zinc), have high magnetic permeability and high electrical resistivity, and are used especially in electronic devices
2
: a solid solution in which alpha iron is the solvent
Examples of ferrite in a Sentence
Recent Examples on the Web
Future turbines will avoid dependence on rare earths by using ferrite magnets in the generators.
—
Llewellyn King, Forbes.com, 20 June 2025
Fyne claims that the powerful point source configuration is driven by multiple motor systems featuring a neodymium magnet for the high frequencies and a large ferrite magnet for the main cone.
—Mark Sparrow, Forbes.com, 12 May 2025
This produces islands of austenite surrounded by a matrix of softer ferrite, with regions of harder bainite and martensite.
—John Johnson Jr., Smithsonian Magazine, 7 Aug. 2024
The Hong Kong team have now developed a whole-body ULF MRI scanner in which patients are placed between two permanent neodymium ferrite boron magnet plates—one above the body and the other below.
—IEEE Spectrum, 15 May 2024
Iron Ball consists of tiny spheres coated in ferrite or carbonyl iron suspended in epoxy paint.
—David Hambling, Forbes, 29 Nov. 2023
This innovative product, packed with over 500 ferrite stones, molds together like putty, providing a tactile and engaging experience.
—Poppy Morgan, Rolling Stone, 21 Nov. 2023
However, as Wired also notes, ferrite has about one-tenth the magnetic strength of neodymium, meaning any ferrite magnet will likely need to be larger and heavier than its predecessor.
—Darren Orf, Popular Mechanics, 2 June 2023
Among the non-rare-earth permanent magnets invented so far, only two are in large-scale production: ferrites and another type called Alnico (aluminum nickel cobalt).
—IEEE Spectrum, 22 Mar. 2023
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Llewellyn King, Forbes.com, 20 June 2025
Fyne claims that the powerful point source configuration is driven by multiple motor systems featuring a neodymium magnet for the high frequencies and a large ferrite magnet for the main cone.
—Mark Sparrow, Forbes.com, 12 May 2025
This produces islands of austenite surrounded by a matrix of softer ferrite, with regions of harder bainite and martensite.
—John Johnson Jr., Smithsonian Magazine, 7 Aug. 2024
The Hong Kong team have now developed a whole-body ULF MRI scanner in which patients are placed between two permanent neodymium ferrite boron magnet plates—one above the body and the other below.
—IEEE Spectrum, 15 May 2024
Iron Ball consists of tiny spheres coated in ferrite or carbonyl iron suspended in epoxy paint.
—David Hambling, Forbes, 29 Nov. 2023
This innovative product, packed with over 500 ferrite stones, molds together like putty, providing a tactile and engaging experience.
—Poppy Morgan, Rolling Stone, 21 Nov. 2023
However, as Wired also notes, ferrite has about one-tenth the magnetic strength of neodymium, meaning any ferrite magnet will likely need to be larger and heavier than its predecessor.
—Darren Orf, Popular Mechanics, 2 June 2023
Among the non-rare-earth permanent magnets invented so far, only two are in large-scale production: ferrites and another type called Alnico (aluminum nickel cobalt).
—IEEE Spectrum, 22 Mar. 2023
Cite this Entry
“Ferrite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ferrite. Accessed 30 Jun. 2025.
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