an electric lamp that radiates ultraviolet rays, used therapeutically as a substitute for sunlight, an electric lamp designed to emit radiation of a similar type to that of sunlight; now esp. one that produces ultraviolet light for therapeutic purposes or to produce an artificial sun-tan, lahendus- (hrl elavhõbe-) lamp, mille kiirguse põhiosa moodustab ultraviolettkiirgus. Kiirguse spektri järgi eristatakse bakteritsiid-, erüteem-, päevitus- (sh solluks-) jt eriotstarbelampe.