Как по Английски будет mikroskopisch

adjective

So small as to be visible only with a microscope.

Примеры использования:

Microscopic algae

adjective

Relating to a microscope or its use.

Примеры использования:

The cells were smeared on microscopical slides

adverb

In a way that uses or can only be seen with a microscope (= a device that makes very small objects look larger)

Примеры использования:

Microscopically small, microscopically, both kidneys showed many small scars., everyone is going to…