Noah Webster
Microscopic
MICROSCOP'IC
MICROSCOP'ICAL, adjective Made by the aid of a microscope; as microscopic observation.
1. Assisted by a microscope.
Evading even the microscopic eye.
2. Resembling a microscope; capable of seeing small objects.
Why has not man a microscopic eye?
3. Very small; visible only by the aid of a microscope; as a microscopic insect.