excimer

[ ek-suh-mer ]
/ ˈɛk sə mər /

noun Chemistry.

a molecular complex of two, usually identical, molecules that is stable only when one of them is in an excited state.

QUIZZES

TAKE THIS QUIZ TO SEE WHAT YOU KNOW ABOUT 2ND-3RD GRADE VOCAB FROM BOOKS!

Are you learning new vocabulary? Or do you just have an interest in words? Either way, this quiz is for you.
Question 1 of 10
orchard

Origin of excimer

First recorded in 1960–65; exci(ted) + (di)mer
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for excimer

excimer
/ (ˈɛkˌsaɪmə) /

noun

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