单词 | chemiluminescence |
释义 | chemiluminescence[ kem-uh-loo-muh-nes-uhns ] / ˌkɛm əˌlu məˈnɛs əns / noun(in chemical reactions) the emission of light by an atom or molecule that is in an excited state. Origin of chemiluminescenceFirst recorded in 1900–05; chemi- + luminescence OTHER WORDS FROM chemiluminescencechem·i·lu·mi·nes·cent, adjectiveWords nearby chemiluminescencechemical toilet, chemical warfare, chemical weathering, chemico-, chemigraphy, chemiluminescence, chemin de fer, chemiosmosis, chemise, chemisette, chemism Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for chemiluminescence
British Dictionary definitions for chemiluminescencechemiluminescence / (ˌkɛmɪˌluːmɪˈnɛsəns) / nounthe phenomenon in which a chemical reaction leads to the emission of light without incandescence Derived forms of chemiluminescencechemiluminescent, adjectiveCollins 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 chemiluminescencechemiluminescence [ kĕm′ə-lōō′mə-nĕs′əns ] The emission of light by a substance as a result of undergoing a chemical reaction that does not involve an increase in its temperature. Chemiluminescence usually occurs when a highly oxidized molecule, such as a peroxide, reacts with another molecule. The bond between the two oxygen atoms in a peroxide is relatively weak, and when it breaks the atoms must reorganize themselves, releasing energy in the form of light. Compare bioluminescence. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
随便看 |
英语词典包含192737条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。