How to Use iron oxide in a Sentence

iron oxide

noun
  • Over time, the iron weathers to form iron oxide, which is the base for the unique pigment.
    Clarissa Wei, Smithsonian Magazine, 25 Sep. 2020
  • The dunes in the area had a soft red hue due to iron oxide in the sand, which soaked up the sun's energy and held it.
    Richard Mason, Arkansas Online, 23 Aug. 2020
  • The hotter Earth melted iron oxide, and the iron sank into the core.
    Chris Smith, BGR, 23 Mar. 2021
  • The fentanyl was found in a shipment of iron oxide from China.
    Fox News, 27 Feb. 2020
  • The ripply pinkish stuff between the dunes is made of smaller grains of sand laden with iron oxide -- rust!
    Phil Plait, Discover Magazine, 7 Dec. 2010
  • The Tava is also cross-cut by silvery-gray veins of iron oxide.
    Liam Courtney-Davies, Discover Magazine, 14 Nov. 2024
  • Cliffs streaked red with iron oxide pop against the dark green firs and the iridescent purple and blue mountains in the distance.
    Julie Jag, The Salt Lake Tribune, 8 Aug. 2022
  • The redness of bricks comes from iron oxide—and so does the redness of the rust farmers once mixed with linseed oil to protect their barns’ wood.
    Natalie Hamilton, Smithsonian Magazine, 18 Mar. 2021
  • This sand, red from iron oxide, was found at Makena Point, Maui.
    Discover Magazine, 29 June 2010
  • The area gets its name from the reddish tint created by iron oxide deposits.
    Michael Goldstein, Forbes, 23 Apr. 2022
  • While the red color comes from the iron oxides present, there are a lot of other materials in it, some of which can be toxic.
    John Timmer, Ars Technica, 24 Jan. 2024
  • Located in the Navajo Nation near Page, Ariz., the slot canyon’s warm colors come from iron oxide, or rust, in the sandstone.
    Allison Parshall, Scientific American, 8 Feb. 2024
  • Your steel may look shiny after knocking the visible rust off, but there’s still some iron oxide there.
    Ben Wojdyla, Popular Mechanics, 21 Apr. 2023
  • Ancient mine gets the shaft Even very important resources, like the iron oxide mine at San Ramón, were abandoned.
    Kiona N. Smith, Ars Technica, 7 Apr. 2022
  • The planet is covered in rust or iron oxide, not nuclear waste.
    Chris Smith, BGR, 23 Mar. 2021
  • The presence of a reddish iron oxide, for instance, indicates that the wildfire burned very hot.
    Matt Simon, Wired, 18 Aug. 2021
  • The painters used ochre that produced a reddish mulberry pigment, which came from the presence of iron oxide.
    Livia Gershon, Smithsonian Magazine, 23 Feb. 2021
  • Rather than radioactive tracers, the new method sends an iron oxide contrast agent through the patient's body.
    John Ericson, Newsweek, 2 Apr. 2014
  • The moon has a much higher iron oxide (FeO) concentration than Earth.
    Korey Haynes, Discover Magazine, 29 Apr. 2019
  • Rust, which is also known as iron oxide, gives Mars its reddish color.
    Chris Ciaccia, Fox News, 6 Sep. 2020
  • The dust particles consist of iron oxide, the same chemical as rust.
    Shi En Kim, Smithsonian Magazine, 18 Oct. 2023
  • Relative to the Earth, the Moon has a lot more iron oxide, which suggests that Theia also had a lot of this material.
    John Timmer, Ars Technica, 1 Nov. 2023
  • The art that survives today uses a color red, which comes from mixing iron oxide taken from the soil.
    Joshua Rapp Learn, Discover Magazine, 15 Jan. 2025
  • One idea is to harness red mud, which is typically 40% to 70% iron oxide, to make iron-rich cements.
    Robert F. Service, Science | AAAS, 20 Aug. 2020
  • Cinnabar was the high-end option for painting things red; more ordinary projects made-do with simple iron oxide.
    Kiona N. Smith, Ars Technica, 17 Jan. 2020
  • Also, because iron oxide comes in red, yellow and brown, these stains are available in wood tones only.
    Washington Post, 7 Sep. 2020
  • True Pigments is not the first to extract iron oxide pigments from pollution.
    Chelsea Lee, CNN, 2 Aug. 2022
  • In some places, red soils comprised of calcareous clay are rich in iron oxides that lend a bright red color as well as impressive weight and structure to the wines.
    Tom Hyland, Forbes, 7 Jan. 2025
  • The mesh coating relies on iron oxide and Nafion, which is a fluoropolymer-copolymer material that is often used in fuel cells.
    IEEE Spectrum, 15 Jan. 2025
  • The scientists created their own Martian dust in a laboratory using different types of iron oxide.
    Ashley Strickland, CNN, 25 Feb. 2025

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'iron oxide.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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