[ ek-suh-mer ]
/ ˈɛk sə mər /
a molecular complex of two, usually identical, molecules that is stable only when one of them is in an excited state.
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British Dictionary definitions for excimer
/ (ˈɛkˌsaɪmə) /
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 & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012