I. ˈmīkrəˌgraf, -rȧf noun
Etymology: International Scientific Vocabulary micr- + -graph
1. : an instrument for executing minute writing or engraving
2. : a graphic reproduction of the image of an object or part of an object formed by a microscope
3. : an instrument for measuring minute movements by the magnified record of movements of a diaphragm
II. transitive verb
: to make a micrograph of
• mi·crog·ra·pher mīˈkrägrəfər noun -s