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ultramicroscopic

British  
/ ˌʌltrəˌmaɪkrəˈskɒpɪk, ˌʌltrəmaɪˈkrɒskəpɪ /

adjective

  1. too small to be seen with an optical microscope

  2. of or relating to an ultramicroscope

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Example Sentences

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Its predictions are stunningly accurate, and its power to grasp the unseen ultramicroscopic world has brought us modern marvels.

From New York Times May 8, 2018

The increased understanding of ultramicroscopic cellular activities has led to the development of new drugs for a wide variety of disorders, including heart disease.

From Time Magazine Archive

It probably belongs therefore to the class of ultramicroscopic organisms called filterable viri.

From Time Magazine Archive

They are organic chemical compounds in the blood stream, in units of ultramicroscopic size.

From Time Magazine Archive

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

From Insects and Diseases A Popular Account of the Way in Which Insects may Spread or Cause some of our Common Diseases by Doane, Rennie Wilbur

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