Microscopic

adjective

1. Of, or relating to microscopes or microscopy; microscopal

   "We supply all microscopic stains and other materials."

2. So small that it can only be seen using a microscope.

   "The water was full of microscopic organisms."

3. Very small; minute

   "Compared to the galaxy, we are microscopic in scale."

4. Carried out with great attention to detail.

   "The police carried out a microscopic search of the crime scene."

5. Able to see extremely minute objects.

   "Why has not man a microscopic eye? — Alexander Pope."