What is the X in X-mas?
photomicrograph pho·to·mi·cro·graph (fō'tō-mī'krə-grāf')
A photograph made through a microscope. Also called microphotograph. v. pho·to·mi·cro·graphed, pho·to·mi·cro·graph·ing, pho·to·mi·cro·graphs
To photograph an object through a microscope.
photography of objects under a microscope. Such opaque objects as metal and stone may be ground smooth, etched chemically to show their structure, and photographed by reflected light with a metallurgical microscope.