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A diatomic molecule that exists only when one of the atoms is in an excited energy state, especially one whose atoms are the same chemical element.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(General Physics) physics an excited dimer formed by the association of excited and unexcited molecules, which would remain dissociated in the ground state
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈɛk sə mər)

a molecular complex of two, usu. identical, molecules that is stable only when one of them is in an excited state.
[1960–65; exci (ted) + (di) mer]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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clinical trials to evaluate the safety and efficacy of the Technolas Teneo excimer laser for vision correction surgery for myopia and myopic astigmatism.
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As a result, we found that the relative intensity of excimer emission with respect to monomer emission increases with [H.sub.2][O.sub.2] concentration, and the present methodology enables us to measure [H.sub.2][O.sub.2] by means of ratiometric fluorescence change in the range of 0-30 [micro]M.
Ra Medical Systems was founded in 2002 to commercialize excimer lasers for the treatment of dermatologic and cardiovascular diseases.
The wave frontoptimized algorithm of the Allegretto Wave Eye-Q 400-Hz excimer laser platform demonstrated good refractive and visual results.
The word excimer is a combination of 'excited' and 'dimer.' A dimer is a compound formed by the combination of two identical molecules.
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The VTRAC Excimer Lamp system, offered internationally, provides targeted therapeutic efficacy demonstrated by excimer technology with the simplicity of design and reliability of a lamp system.
Its customers include manufacturers of industrial excimer laser products, laser eye surgery sub-assemblies, target simulators for space and aviation systems, power modules for computerized tomography products, test systems for commercial aerospace OEMs, and toll road antennas and control boxes.