Dictionary.com

excimer

[ ek-suh-mer ]
/ ˈɛk sə mər /
Save This Word!

noun Chemistry.
a molecular complex of two, usually identical, molecules that is stable only when one of them is in an excited state.
QUIZ
CUDDLE UP! A COZY QUIZ ON FALL WORDS HAS ARRIVED
If autumn is your ideal season, spice up your repertoire of "fall" vocabulary with this quiz on some warm and vivid descriptive words for the season.
Question 1 of 10
Which of the following words means “to make a crackling sound; crackle”?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

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. 2021

How to use excimer in a sentence

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
FEEDBACK