Dictionary

mercury–vapor lamp

noun

Definition of MERCURY-VAPOR LAMP

:  an electric lamp in which the discharge takes place through mercury vapor —called also mercury lamp

First Known Use of MERCURY-VAPOR LAMP

1904

mercury–vapor lamp

noun mer·cu·ry–va·por lamp \-ˌvā-pər-\   (Medical Dictionary)

Medical Definition of MERCURY–VAPOR LAMP

:  an electric lamp in which the discharge takes place through mercury vapor and which has been used therapeutically as a source of ultraviolet radiation

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