ambrotype

[ am-bruh-tahyp ]

/ ˈæm brəˌtaɪp /

an early type of photograph, made by placing a glass negative against a dark background.

Origin of ambrotype

1850–55, Americanism; < Greek ámbro(tos) immortal (see ambrosia) + -type

There he took the ambrotype picture of her which is still extant, and then he was carried home again to die a few days later.

Venerable Philippine Duchesne |G. E. M.
Well, you just should have seen that poor fellow's face when they opened that ambrotype and held it before his eyes!

The Recollections of A Drummer-Boy |Harry M. Kieffer
She had an ambrotype taken when she was young, with kinder full sleeves an' her hair brought down over her ears.

Country Neighbors |Alice Brown
A modification of the ambrotype, however, still survives in what is known as the “tin-type” or “ferro-type.”

The Progress of Invention in the Nineteenth Century. |Edward W. Byrn

Suddenly Ellen Tiffton's story of the ambrotype flashed into 'Lina's mind.

Bad Hugh |Mary Jane Holmes

ambrotype

/ (ˈæmbrəʊˌtaɪp) /

photog an early type of glass negative that could be made to appear as a positive by backing it with black varnish or paper

C19: from Greek ambrotos immortal + -type; see ambrosia