Mi`cro*pho"to*graph (?), n. [Micro- + photograph.]
1.
A microscopically small photograph of a picture, writing, printed page, etc.
2.
An enlarged representation of a microscopic object, produced by throwing upon a sensitive plate the magnified image of an object formed by a microscope or other suitable combination of lenses.
A picture of this kind is preferably called a photomicrograph.
© Webster 1913.