What does microcard mean?
A microcard is a card carrying a greatly reduced photographic image, usually produced as part of a microphotographic copying system and read with a magnifying device. In libraries and archives, groups of microcards could reproduce catalogue records, documents, and reference images in a compact, easily filed format. The word is therefore associated with twentieth-century information storage before digital scanners and online databases became standard. A microcard describes the physical carrier rather than the enlarged image itself: a microfiche, for example, uses transparent film rather than card. The term remains useful when discussing historical catalogues, equipment, and preservation practices, although it is specialized and uncommon in everyday English. Most often, it refers specifically to a photographic record reduced for enlargement with a dedicated reader, rather than to any card bearing miniature writing.
nounA small card bearing a reduced photographic image, made to be enlarged with a special reader. Microcards were commonly used to store compact versions of catalogue records, documents, and reference images.
- A small card bearing a reduced photographic image for enlargement with a special reader.
"The archivist loaded the microcard into the reader and enlarged the faded catalogue entry."
"The archivist loaded the microcard into the reader and enlarged the catalogue entry."
"The museum displayed a microcard containing a reduced image of the manuscript."
The standard plural is microcards. The singular form is also used attributively, as in microcard reader.
"The collection contains thousands of microcards documenting early manuscript acquisitions."
Before gigabytes, libraries packed pages of information onto tiny cards.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does microcard come from?
Microcard is a twentieth-century English compound formed from the combining form micro- and the noun card. Micro- comes through scientific Latin from Greek mikros, meaning “small,” while card comes through Old French from Latin charta, referring to paper or a written sheet. The compound belongs to the development of microphotography and the miniaturization of library and archival records.
How microcard is actually used
This is specialized terminology associated chiefly with libraries, archives, and historical microphotographic systems. It is now encountered mainly in older catalogues, equipment descriptions, and discussions of information storage before digital imaging became standard.
Easily confused with microcard
A microcard carries images on a card, whereas a microfiche carries reduced images on transparent film.
A microcard is a card-based photographic record, while microfilm generally consists of photographs recorded on film.