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electron microscope

noun
1.
a microscope of extremely high power that uses beams of electrons focused by magnetic lenses instead of rays of light, the magnified image being formed on a fluorescent screen or recorded on a photographic plate: its magnification is substantially greater than that of any optical microscope.
Origin of electron microscope
1930-1935
1930-35
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for electron microscope
Historical Examples
  • By now, Ken and his companions had learned the use of the electron microscope and how to prepare specimens for it.

    The Year When Stardust Fell Raymond F. Jones
  • He set the electron microscope up on that and plugged it in.

    Badge of Infamy Lester del Rey
  • The electron microscope told them that, now that they had the substance isolated and could examine it.

    Star Surgeon Alan Nourse
  • The screen was a cubical frame in which an apparently solid image was built up of an object under an electron microscope.

    The Jupiter Weapon Charles Louis Fontenay
  • I'll arrange for one of the teaching fellows to show you how to prepare metallic samples and operate the electron microscope.

    The Year When Stardust Fell Raymond F. Jones
  • It took an electron microscope to do it, but he found a virus in the blue patches which matched the type discovered on Tralee.

    Pariah Planet Murray Leinster
  • He found his father in the laboratory working with the electron microscope.

    The Year When Stardust Fell Raymond F. Jones
  • She touched the electron microscope with something like affection.

    Badge of Infamy Lester del Rey
British Dictionary definitions for electron microscope

electron microscope

noun
1.
a powerful type of microscope that uses electrons, rather than light, and electron lenses to produce a magnified image
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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electron microscope in Medicine

electron microscope n.
Abbr. EM
Any of a class of microscopes that use electrons rather than visible light to produce magnified images, especially of objects having dimensions smaller than the wavelengths of visible light, with linear magnification approaching or exceeding one million (106).

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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electron microscope in Science
electron microscope  
A microscope that produces images of extremely small objects by using beams of electrons rather than visible light. Since electrons have a much shorter wavelength than light, the use of electron beams rather than light beams can resolve much finer structural details in the sample. Electrons are beamed at the sample and focused by magnets; a detector then converts the refracted or reflected beams into a black and white image. Powerful electron microscopes can create accurate images of objects as small as individual molecules. See also scanning electron microscope.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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electron microscope in Culture

electron microscope definition


A device that uses electrons instead of light to form images of very small objects, such as individual parts of small living things.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Value for electron

10
13
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