- an instrument that uses scattering phenomena to detect the position of objects too small to be seen by an ordinary microscope.
Origin of ultramicroscope
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for ultramicroscope
What I saw through that ultramicroscope was not an unproven theory, but a fact.The Girl in the Golden Atom
Raymond King Cummings
The above action can be readily demonstrated in vitro by means of the ultramicroscope.
Colloidal particles are, however, generally visible under the Zigmondy "ultramicroscope."The Chemistry of Plant Life
Roscoe Wilfred Thatcher
- 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
- 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.