Of or pertaining to the microscope or to microscopy; made with a microscope; as, microscopic observation.
- Too small to be seen by the unaided eye but large enough to be studied under a microscope.
- Of, relating to, or concerned with a microscope.
- Exceedingly small; minute: "The activities of men . . . were reduced to a microscopic scale” ( John Hersey).
- Characterized by or done with extreme attention to detail: a microscopic investigation.