Excimer
ahd-5
noun.
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.
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noun.
Any
diatomic
molecule
, at least one of whose
atoms
is in an
excited state
Rhyme
Words with the same terminal sound
Timur
brimmer
dimmer
glimmer
grimmer