Akademik

Microscopic
So small it cannot be seen without the aid of microscope. As opposed to macroscopic (large enough to be seen with naked eye). A tiny tumor is microscopic while a big tumor is macroscopic.

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mi·cro·scop·ic .mī-krə-'skäp-ik or mi·cro·scop·i·cal -i-kəl adj
1) of, relating to, or conducted with the microscope or microscopy
2) so small or fine as to be invisible or indistinguishable without the use of a microscope compare MACROSCOPIC, SUBMICROSCOPIC, ULTRAMICROSCOPIC (1)
mi·cro·scopi·cal·ly -i-k(ə-)lē adv

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adj.
1. too small to be seen clearly without the use of a microscope.
2. of, relating to, or using a microscope.

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mi·cro·scop·ic (mi″kro-skopґik) 1. of extremely small size; visible only by the aid of the microscope. 2. pertaining or relating to a microscope or to microscopy.

Medical dictionary. 2011.