| 单词 | thermion |
| 释义 | thermion[ thurm-ahy-uhn, -on; thur-mee-uhn ] / ˈθɜrmˌaɪ ən, -ɒn; ˈθɜr mi ən / noun Physics.an ion emitted by incandescent material. Origin of thermionFirst recorded in 1910–15; therm- + ion OTHER WORDS FROM thermiontherm·i·on·ic, adjectivetherm·i·on·i·cal·ly, adverbWords nearby thermionthermette, thermic, thermic fever, Thermidor, Thermidorian, thermion, thermionic, thermionic current, thermionic emission, thermionics, thermionic tube Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for thermionthermion / (ˈθɜːmɪən) / nounphysics an electron or ion emitted by a body at high temperature Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for thermionthermion [ thûr′mī′ən ] An electrically charged particle or ion that is emitted by a heated conducting material. The electrons emitted from the cathodes of electron tubes (such as cathode ray tubes) are thermions. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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