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quartz lamp

noun
1.
a lamp consisting of an ultraviolet light source, as mercury vapor, contained in a fused-silica bulb that transmits ultraviolet light with little absorption.
Origin of quartz lamp
1920-1925
1920-25
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for quartz lamp

quartz-iodine lamp

noun
1.
a type of tungsten-halogen lamp containing small amounts of iodine and having a quartz envelope, operating at high temperature and producing an intense light for use in car headlamps, etc
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
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Word Value for quartz

24
25
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