from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An electrically neutral excited state of an insulator or semiconductor, often regarded as a bound state of an electron and a hole.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A bound state of an electron and an electron hole in an insulator or semiconductor
excit(ation) + -on1.(American Heritage® Dictionary of the English Language, Fourth Edition)
excit- + -on (Wiktionary)