cerotype

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The process of preparing a printing surface for electrotyping by first engraving on a wax-coated metal plate.

from The Century Dictionary.

• noun The art or process of engraving through a coating of prepared wax spread over a smooth plate from which a printing surface can be produced by the plaster process of stereotyping or by electrotyping.

from the GNU version of the Collaborative International Dictionary of English.

• noun A printing process of engraving on a surface of wax spread on a steel plate, for electrotyping.