terbium
noun
ter·bi·um ˈtər-bē-əm 
: a metallic element of the rare-earth group with atomic number 65 that occurs naturally only in combination and that is used especially in alloys for electronic equipment and as a green phosphor (see phosphor sense 2) in electronic displays see Chemical Elements Table
Example Sentences
Recent Examples on the Web The same goes for the use of europium and terbium in lighting applications. 
John Timmer, Ars Technica, 20 May 2022 China processes more than half of the world’s cobalt, lithium, and the class of rare-earth elements (REEs) that includes neodymium, dysprosium, praseodymium, and terbium . . . Andrew Stuttaford, National Review, 12 Mar. 2022 Europium and terbium, for example, are needed to make HD screens; zinc and tin help make touch-responsive surfaces; and lithium is used in batteries — just to name a few. Rachel Ramirez And Clare Duffy, CNN, 3 Oct. 2021 NdFeB magnets containing the heavy rare earth dysprosium and sometimes terbium are particularly useful, because the presence of heavy rare earths improves the magnet’s ability to withstand high temperatures. Mary Hui, Quartz, 14 May 2021 Adding a heavy rare earth like dysprosium and sometimes terbium makes the magnet more temperature stable, and suitable for use in offshore wind turbines where maintenance costs are high. Mary Hui, Quartz, 23 Apr. 2021 During the last 34 million years, the fossils slowly absorbed yttrium, europium, terbium, and dysprosium from the fluid trapped in the mud. Jennifer Frazer, Scientific American, 21 Sep. 2020 Greenland has some of the biggest deposits of neodymium, dysprosium, terbium, praseodymium, and uranium. David Clark Scott, The Christian Science Monitor, 22 Aug. 2019 Neodymium, for example, is used to make magnets found in smartphone speakers and haptic feedback devices, while terbium is used to make solid state hard drives. Klint Finley, WIRED, 17 June 2019 See More
John Timmer, Ars Technica, 20 May 2022 China processes more than half of the world’s cobalt, lithium, and the class of rare-earth elements (REEs) that includes neodymium, dysprosium, praseodymium, and terbium . . . Andrew Stuttaford, National Review, 12 Mar. 2022 Europium and terbium, for example, are needed to make HD screens; zinc and tin help make touch-responsive surfaces; and lithium is used in batteries — just to name a few. Rachel Ramirez And Clare Duffy, CNN, 3 Oct. 2021 NdFeB magnets containing the heavy rare earth dysprosium and sometimes terbium are particularly useful, because the presence of heavy rare earths improves the magnet’s ability to withstand high temperatures. Mary Hui, Quartz, 14 May 2021 Adding a heavy rare earth like dysprosium and sometimes terbium makes the magnet more temperature stable, and suitable for use in offshore wind turbines where maintenance costs are high. Mary Hui, Quartz, 23 Apr. 2021 During the last 34 million years, the fossils slowly absorbed yttrium, europium, terbium, and dysprosium from the fluid trapped in the mud. Jennifer Frazer, Scientific American, 21 Sep. 2020 Greenland has some of the biggest deposits of neodymium, dysprosium, terbium, praseodymium, and uranium. David Clark Scott, The Christian Science Monitor, 22 Aug. 2019 Neodymium, for example, is used to make magnets found in smartphone speakers and haptic feedback devices, while terbium is used to make solid state hard drives. Klint Finley, WIRED, 17 June 2019 See More Word History
Etymology
New Latin, from Ytterby, Sweden
First Known Use
1843, in the meaning defined above
Medical Definition
terbium
noun
ter·bi·um ˈtər-bē-əm
: a usually trivalent metallic element of the rare-earth group —symbol Tb see Chemical Elements Table