photostat

Etymology

A genericization from the trade name of one of the earliest commercially successful types of photocopier, a pre-xerography type. Xerography displaced it in the 1960s and 1970s; since then the relics of it are historical curiosities. More in Wikipedia at Photostat machine.

photostat means A (non-xerographic) photocopy made using a Photostat machine; (loosely) any photocopy, even a xerographic one. Lexicurio rates it Rare gem — a strength score of 83 out of 100.

noun

A (non-xerographic) photocopy made using a Photostat machine; (loosely) any photocopy, even a xerographic one.“Near-synonyms: photocopy, xerox, xerograph, copy (all broadly synonymous)”
The machine (essentially, a special camera) on which such a copy is made.“Near-synonyms: photocopier, copier (both contextually synonymous); xerographer, xerox (broadly synonymous)”

verb

To make such a photocopy.“Near-synonyms: photocopy, xerox, xerograph, copy (all broadly synonymous)”