Definitions

1. noun

An early type of photograph in which a positive image was produced on a glass plate coated with a light-sensitive substance, and a negative image was produced on a paper backing.

“The museum has an extensive collection of antique ambrotypes, showcasing the early history of photography.”

2. noun

A photograph or likeness made by the process of forming a positive image on a glass plate.

“Her great-grandmother’s ambrotype hangs proudly on the family wall, a cherished heirloom.”