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ferrotype

[fer-uh-tahyp] /ˈfɛr əˌtaɪp/
verb (used with object), ferrotyped, ferrotyping.
1.
to put a glossy surface on (a print) by pressing, while wet, on a metal sheet (ferrotype tin)
noun
2.
Also called tintype. a positive photograph made on a sensitized sheet of enameled iron or tin.
3.
the process of making such photographs.
Origin
1835-1845
1835-45; ferro- + -type
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for ferrotype

ferrotype

/ˈfɛrəʊˌtaɪp/
noun
1.
a photographic print produced directly in a camera by exposing a sheet of iron or tin coated with a sensitized enamel
2.
the process by which such a print is produced
Systematic name tintype
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for ferrotype

positive photograph produced by applying a collodion-nitrocellulose solution to a thin, black-enameled metal plate immediately before exposure. The tintype, introduced in the mid-19th century, was essentially a variation on the ambrotype, which was a unique image made on glass, instead of metal. Just as the ambrotype was a negative whose silver images appeared grayish white and whose dark backing made the clear areas of shadows appear dark, so the tintype, actually negative in its chemical formation, was made to appear positive by the black plate

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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