Wood's lamp

noun
\ ˈwu̇dz- \
variants: also Wood lamp \ˈwu̇d- \

Medical Definition of Wood's lamp 

: a lamp for producing ultraviolet radiation in which a filter made of nickel-containing glass is used to block all light having a wavelength above 365 nanometers and which is used especially to detect various skin conditions (as some fungus infections) by the fluorescence induced in the affected areas by ultraviolet radiation

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