[ uhl-truh-mahy-kruh-skohp ]
/ ˌʌl trəˈmaɪ krəˌskoʊp /
an instrument that uses scattering phenomena to detect the position of objects too small to be seen by an ordinary microscope.
Related formsul·tra·mi·cro·scop·ic [uhl-truh-mahy-kruh-skop-ik] /ˌʌl trəˌmaɪ krəˈskɒp ɪk/, ul·tra·mi·cro·scop·i·cal, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for ultramicroscopic
The term virus or filterable virus is likewise applied to these ultramicroscopic and filterable agents.The Fundamentals of Bacteriology|Charles Bradfield Morrey
In this way as well as by the inoculation of animals the presence of the ultramicroscopic kinds may be demonstrated.Insects and Diseases|Rennie W. Doane
British Dictionary definitions for ultramicroscopic (1 of 2)
/ (ˌʌltrəˌmaɪkrəˈskɒpɪk) /
too small to be seen with an optical microscope
of or relating to an ultramicroscope
Derived Formsultramicroscopy (ˌʌltrəmaɪˈkrɒskəpɪ), noun
British Dictionary definitions for ultramicroscopic (2 of 2)
/ (ˌʌltrəˈmaɪkrəˌskəʊp) /
a microscope used for studying colloids, in which the sample is strongly illuminated from the side and colloidal particles are seen as bright points on a dark backgroundAlso called: dark-field microscope
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
Medicine definitions for ultramicroscopic (1 of 2)
[ ŭl′trə-mī′krə-skŏp′ĭk ]
Too minute to be seen with an ordinary microscope.
Of or relating to an ultramicroscope.
Medicine definitions for ultramicroscopic (2 of 2)
[ ŭl′trə-mī′krə-skōp′ ]
A microscope with high-intensity illumination used to study very minute objects.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.