• (adv.) By the microscope; with minute inspection; in a microscopic manner.
Mi`cro·scop'ic·al·ly adverb By the microscope; with minute inspection; in a microscopic manner. 
[adv] - in a microscopic manner 2. [adv] - by using a microscope
adverb by using a microscope; so as to be visible only with a microscope; as seen with a microscope; `the blood was examined microscopically`; `the seeds were microscopically small`