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crystoleum

noun
crys·​to·​le·​um | \ kriˈstōlēəm\
plural -s

Definition of crystoleum

: an obsolete process in which a photograph was transferred to glass, the paper backing removed, and the image layer colored by the application of colors to the back

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First Known Use of crystoleum

1882, in the meaning defined above

History and Etymology for crystoleum

crystal + Latin oleum oil

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The first known use of crystoleum was in 1882

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