from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A lamp in which ultraviolet and yellowish-green to blue visible light is produced by an electric discharge through mercury vapor.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Alternative spelling of mercury-vapour lamp.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. ultraviolet lamp that emits a strong bluish light (rich in ultraviolet radiation) as electric current passes through mercury vapor
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