Calotype n. : A method of taking photographic pictures, on paper sensitized with iodide of silver; -- also called Talbotype, from the inventor, Mr. Fox. Talbot.

Example:
Which are the differences between an Calotype and a tintype?

Taxonomy
Calotype, paper, silver nitrate, rinse, grams, ml, silver, Alf B. Meier, salted paper, silver iodide, nitrate, photography, London, silver chloride, watercolor paper, free encyclopedia, Basic Photography, tray.

Defination from the web:
Calotype or talbotype is an early photographic process introduced in 1841 by Henry Fox Talbot, using paper coated with silver iodide. ... The sensitive element of a calotype is silver iodide. With exposure to light, silver iodide decomposes to silver leaving iodine as free element. ...