[ 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.

Origin of ultramicroscope

First recorded in 1905–10; ultra- + microscope

OTHER WORDS FROM ultramicroscope

ul·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. 2020

Examples from the Web for ultramicroscope

British Dictionary definitions for ultramicroscope

/ (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

Medical definitions for ultramicroscope

[ ŭl′trə-mīkrə-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.