Definition of calotype in English:


(also calotype process)


mass nounhistorical
  • An early photographic process in which negatives were made using paper coated with silver iodide.

    • ‘These experiments led him to develop the calotype process, and the production, in 1835, of the first ever negative, a picture of the Oriel window at Lacock.’
    • ‘In the spring of 1841, Henry Talbot patented this new negative process and called it the calotype.’
    • ‘A year later William Henry Fox Talbot, the inventor of the calotype process, the forerunner of photography as we know it today, made a series of representations of city views and buildings.’
    • ‘His technique was called calotype.’
    • ‘The former is credited with the invention of the calotype; the latter with the daguerreotype.’


Mid 19th century: from Greek kalos ‘beautiful’ + type.