What does "microphotograph" mean?

A photograph so reduced in size that it must be viewed through a lens or a microscope.

What is a synonym for "microphotograph"?

Common synonyms include: microdot, micrograph.

noun, verb

noun, verb ·Rare ·Advanced level

Noun

1
A photograph so reduced in size that it must be viewed through a lens or a microscope.
"Holonyms: microform; microfilm, microfiche; microdot"
2
A photograph taken through a microscope, an enlarged picture of a very small item or area: a photomicrograph. proscribed, sometimes

Verb

"Holonyms: microform; microfilm, microfiche; microdot"

From micro- + photograph.