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Dictionary

hal'ogen lamp"

a gas-filled, high-intensity incandescent lamp having a tungsten filament and containing a small amount of a halogen, such as iodine, that vaporizes on heating and redeposits any evaporated tungsten particles back onto the filament: used esp. in motion-picture projectors and automobile headlights.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

halogenate

haloid

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