Microfilm (noun)

1. A film on which documents or other materials have been photographed or recorded at a greatly reduced scale.
2. A long, thin strip of film that contains many small, highly detailed images of documents or other materials.

Origin:

From micro- + film.

Examples:

1. Microfilm is used to store large amounts of information in a small space.
2. The newspaper's archives were preserved on microfilm.
3. The microfilm reader is used to view the images on the microfilm.
4. The microfilm contains historical documents.
5. Many libraries have microfilm collections.