electron microscope

noun

: an electron-optical instrument in which a beam of electrons is used to produce an enlarged image of a minute object
electron microscopist noun
electron microscopy noun

Examples of electron microscope in a Sentence

Recent Examples on the Web
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The research team examined the molar with a micro-CT scan and a scanning electron microscope. Ari Daniel, NPR, 13 May 2026 But finding those potential biosignatures would require bringing a sample back to Earth to examine with an electron microscope. Adam Kovac, Scientific American, 12 May 2026 Once researchers began looking more carefully, differences between feroxa and defilippii started to emerge — but only under a scanning electron microscope. Hanna Wickes, Kansas City Star, 3 Mar. 2026 Instead, it can only be viewed using an electron microscope. Abhimanyu Ghoshal, New Atlas, 20 Feb. 2026 See All Example Sentences for electron microscope

Word History

First Known Use

1932, in the meaning defined above

Time Traveler
The first known use of electron microscope was in 1932

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Cite this Entry

“Electron microscope.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/electron%20microscope. Accessed 16 May. 2026.

Kids Definition

electron microscope

noun
: an instrument in which a beam of electrons is used to produce an enlarged image of a very small object

Medical Definition

electron microscope

noun
: an electron-optical instrument in which a beam of electrons is used to produce an enlarged image of a minute object
electron microscopist noun
electron microscopy noun
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