How to Use thorium in a Sentence

thorium

noun
  • The older a flowstone gets, the more thorium builds up inside it.
    Carl Zimmer, New York Times, 22 Feb. 2018
  • And most of that thorium had never been used at Fernald.
    cincinnati.com, 28 Jan. 2020
  • The uranium-thorium system acts like a clock that starts when the tufa is formed.
    Benjamin Schoville, Quartz, 4 Apr. 2021
  • For one thing, the mantles used in camp lanterns at the time contained small amounts of the radioactive element thorium.
    Douglas Preston, The New Yorker, 10 May 2021
  • One lab tested the ratio of uranium to thorium in two of Misliya-1’s incisors.
    Kiona N. Smith, Ars Technica, 25 Jan. 2018
  • Kaltofen, through the course of his study, found three of the highest levels of thorium radioactivity in the dust of three Hanford workers’ homes.
    Hal Bernton, The Seattle Times, 14 June 2018
  • But not all researchers agree that uranium-thorium dates are valid.
    Lorraine Boissoneault, Smithsonian, 22 Feb. 2018
  • By comparing the ratios of uranium and thorium present in the bone, scientists can tell its age.
    Michael Price, Science | AAAS, 9 Apr. 2018
  • But thorium couldn't produce anywhere near the energy the Orville would require.
    Jennifer Ouellette, Ars Technica, 29 Dec. 2018
  • Soil contains an average of around 6 parts per million (ppm) of thorium.
    David Grossman, Popular Mechanics, 27 Aug. 2019
  • But a thorium plant would be different than the plants with which Americans are familiar.
    David Grossman, Popular Mechanics, 27 Aug. 2019
  • In the core, the radioactive thorium heats the molten salt, which turns water into steam and activates a turbine to make electricity.
    Jacopo Prisco, CNN, 3 June 2022
  • Searches had been made about how to poison a well and about uranium thorium fusion bombs, the search warrant affidavit said.
    Kirk Mitchell, The Denver Post, 8 Aug. 2019
  • Next the team reached out to geochronologist James Paces, who retried the now much-improved uranium-thorium dating technique on the bones.
    Sarah Kaplan, chicagotribune.com, 26 Apr. 2017
  • Technology like thorium fuel is still far from ready for the market.
    Caroline Delbert, Popular Mechanics, 30 July 2020
  • Memmott is studying thorium salt as an energy source at a remote lab in Emery County.
    Leia Larsen, The Salt Lake Tribune, 19 Oct. 2022
  • The now-defunct company disposed of thorium waste on its property and into the Queens sewer.
    Washington Post, 27 July 2017
  • But thorium would play an important role in Rona’s later career.
    New York Times, 28 Aug. 2019
  • The study uses a total of six methods, including measuring the levels of uranium and thorium in layers of stone that have formed over the fossils.
    Sarah Zhang, The Atlantic, 9 May 2017
  • Below is a video of the moment, with fan music added in, and also the entire video of Hoglund discussing thorium, nuclear power and molten salt reactors.
    Ryan Parker, The Hollywood Reporter, 14 May 2022
  • Unlike the uranium, the thorium isn't water-soluble and can only get into the rock via decay.
    Kiona N. Smith, Ars Technica, 15 Dec. 2019
  • The latest result confirms that radium isotopes should be a good place to look for electric dipoles, and that some isotopes of thorium and uranium might be even better.
    Stephen Battersby, Scientific American, 10 May 2013
  • The date is determined by measuring the ratio of uranium to thorium, which changes over time as a result of radioactive decay.
    Carl Engelking, Discover Magazine, 22 Feb. 2018
  • The problem was that scientists usually needed big chunks to find enough uranium and thorium to measure.
    Carl Zimmer, New York Times, 22 Feb. 2018
  • When tufa forms, uranium is ‘locked’ into the crystal structure and begins to decay to produce thorium.
    Benjamin Schoville, Quartz, 4 Apr. 2021
  • The researchers used a method called uranium-series dating, which measures the ratio of uranium to thorium in a bone or sediment sample.
    Kiona N. Smith, Ars Technica, 18 Dec. 2019
  • Nuclear power plants in the United States were designed to use other fuels, and converting them to use thorium would be very expensive.
    Anna Diamond, Smithsonian, 27 Oct. 2017
  • Any thorium or uranium in the sample then combined with the oxygen to form molecules massive enough to stand out in spectrometer data.
    Karmela Padavic-Callaghan, Scientific American, 10 May 2021
  • So, the researchers looked at uranium-thorium isotopes in a stalagmite that had become encrusted in the woman's finger bones.
    Fox News, 7 Feb. 2020
  • Over the course of eons, uranium gradually breaks down into thorium.
    New York Times, 28 Aug. 2019

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

Last Updated: