ultramicroscopic

/ ˌʌltrəˌmaɪkrəˈskɒpɪk; ˌʌltrəmaɪˈkrɒskəpɪ /

adjective

1. too small to be seen with an optical microscope
2. of or relating to an ultramicroscope

Derived Forms

• ultramicroscopy, noun

Example Sentences

In this way as well as by the inoculation of animals the presence of the ultramicroscopic kinds may be demonstrated.

From Project Gutenberg

The term virus or filterable virus is likewise applied to these ultramicroscopic and filterable agents.

From Project Gutenberg