ultramicroscope

[ uhl-truh-mahy-kruh-skohp ]
/ ˌʌl trəˈmaɪ krəˌskoʊp /
|

noun

an instrument that uses scattering phenomena to detect the position of objects too small to be seen by an ordinary microscope.

Origin of ultramicroscope

First recorded in 1905–10; ultra- + 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)

ultramicroscopic

/ (ˌʌltrəˌmaɪkrəˈskɒpɪk) /

adjective

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)

ultramicroscope

/ (ˌʌltrəˈmaɪkrəˌskəʊp) /

noun

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)

ultramicroscopic

[ ŭl′trə-mī′krə-skŏpĭk ]

adj.

Too minute to be seen with an ordinary microscope.
Of or relating to an ultramicroscope.

Medicine definitions for ultramicroscopic (2 of 2)

ultramicroscope

[ ŭl′trə-mīkrə-skōp′ ]

n.

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.