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calotype

[kal-uh-tahyp] /ˈkæl əˌtaɪp/
noun
1.
an early negative-positive photographic process, patented by William Henry Talbot in 1841, in which a paper negative is produced and then used to make a positive contact print in sunlight.
2.
a print made by this process.
Also called Talbotype.
Origin of calotype
1835-1845
1835-45; < Greek kalo- (combining form of kalós beautiful) + -type
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for calotype

calotype

/ˈkæləʊˌtaɪp/
noun
1.
an early photographic process invented by W. H. Fox Talbot, in which the image was produced on paper treated with silver iodide and developed by sodium thiosulphite
2.
a photograph made by this process
Word Origin
C19: from Greek kalos beautiful + -type
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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