Definitions

1. noun

A thin, transparent sheet of cellulose nitrate or other plastic used for preserving and protecting photographs, especially in the 19th century.

“The library used a bibliofilm to preserve the fragile photographs in their collection.”

2. noun

A thin, transparent sheet of plastic or other material used for protecting and preserving documents or photographs.

“The archivist carefully placed a bibliofilm over the fragile pages of the ancient manuscript.”