A picture taken on a full bowl of prepared cup where the lights tend to be represented in silver and also the colors are manufactured by a dark background noticeable through the unsilvered portions for the glass
- A picture taken on a plate of prepared glass, by which the lights are represented in silver, and tones are manufactured by a dark background noticeable through unsilvered portions associated with the glass.
1855, American English, obviously from Greek ambrotos "immortal, imperishable" (see ambrosia), with second factor from daguerreotype. A form of photograph on glass with lights given by silver and colors by a dark history showing through. This innovation is made up in a better procedure for taking photographic pictures upon glass, also of beautifying and protecting exactly the same, which plan I have fashioned "ambrotype." My enhanced procedure has actually mention of the the skill of taking photos photographically on a film of collodion upon the top of a sheet of glass, the collodion becoming suitably ready for the purpose. By the use of the said procedure, the wonder and permanency of these photographs tend to be significantly increased, and I also have actually with this account styled the method "ambrotype," through the Greek word ambrotos, immortal. ["Specification of the Patent approved to James A. Cutting, of Boston, in america of The united states, Photographer, for a greater procedure of using Photographic photographs upon Glass and of Beautifying and Preserving the same. Dated London, July 26, 1854," printed in "Journal for the Franklin Institute," September 1855]
(letter.) An image taken on a plate of prepared glass, in which the lights are represented in silver, while the colors are manufactured by a dark back ground noticeable through unsilvered portions for the glass.