a lamp consisting of an ultraviolet light source, as mercury vapor, contained in a fused-silica bulb that transmits ultraviolet light with little absorption.
[ 1920-25 ]
a lamp consisting of an ultraviolet light source, as mercury vapor, contained in a fused-silica bulb that transmits ultraviolet light with little absorption.
[ 1920-25 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012