Finsen light

noun Fin·sen light \ˈfin(t)sən-, -nzən-\

Definition of Finsen light

  1. :  a mixture of blue, violet, and near ultraviolet light that is produced by a lamp using a high-temperature carbon arc or a mercury arc and that is used in the treatment of lupus and certain other skin conditions and in testing paints and other protective coatings

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Origin and Etymology of finsen light

after Niels R. Finsen †1904 Danish physician

Seen and Heard

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to cast off or become cast off

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