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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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adj. - Of or relating to or characteristic of an electrically charged particle, especially an electron, emitted by a conducting material at high temperatures.

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Usage examples (40)
  • thermionic cathode
  • His early work was concerned with thermionic emission and adsorbed layers on tungsten.
  • It was a wirin 'diagram, and sair ancient, too, for there were symbols for thermionic valves-vacuum tubes-in it.
  • It is based on the 1898 Pidgeon electrostatic machine which includes an inductance circuit, a capacitance circuit, and a thermionic rectification valve.
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We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.