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excitable
excitant
excitation
excite
excited state
excitement
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exciting
exciton
excitotoxicity
excitotoxin
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exciton

ex·ci·ton [ éksi tòn ] (plural ex·ci·tons)


noun 
Definition:
 
electron and hole: a mobile neutral combination of an electron in an excited state and a hole in a crystal. Exciton activity is important in semiconductors.

[Mid-20th century. <excitation + -on1]
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