with respect to a microscope, or having its personality or purpose; adjusted to the reasons of a microscope, or even to the assessment of small objects: because, a microscopic lens, eyepiece, or stand; microscopic picture or sight.
Of minute size; so little on be invisible or indistinct to your naked-eye; adjusted to or prepared for evaluation by the miscroseope: as, microscopic animals or particles; a microscopic item.
Made or effected by or as though by the help of a microscope; hence, relating to things of minute dimensions or value; infinitesimal; petty: because, microscopic observations or investigations; microscopic critique.
Characteristic associated with microscope or its usage : as, to see such a thing with microscopic minuteness; microscopic definition of an object.
Employing or using the services of a microscope, or like with a microscope.
How would you define microscopic?