microscope

noun

mi·​cro·​scope ˈmī-krə-ˌskōp How to pronounce microscope (audio)
1
: an optical instrument consisting of a lens or combination of lenses for making enlarged images of minute objects
especially : compound microscope
2
: a non-optical instrument (such as one using radiations other than light or using vibrations) for making enlarged images of minute objects
an acoustic microscope

Examples of microscope in a Sentence

Students viewed the crystals through a microscope.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Kemeny said Bast had worked out an interface to get the rotating laser beams, microscopes, cameras, and myriad other components of the experiment to coordinate through a common interface. — Kyle Orland, ArsTechnica, 27 Aug. 2026 Maintaining that sense of universal appeal though could be trickier – or impossible – to replicate under a national microscope, outside the context of Georgia or by a different candidate. — Sam Gringlas, NPR, 27 Aug. 2026 Or picture a science lab, where microscopes can autonomously search for a certain type of molecule—all hours of the day, no humans necessary. — Emily Forlini, Fortune, 27 Aug. 2026 Few teams in the NFL have operated under as intense a microscope over the last few seasons as the Dallas Cowboys. — David Troy Outkick, FOXNews.com, 26 Aug. 2026 See All Example Sentences for microscope

Word History

Etymology

New Latin microscopium, from micr- + -scopium -scope

First Known Use

1648, in the meaning defined at sense 1

Time Traveler
The first known use of microscope was in 1648

Phrases Containing microscope

Rhymes for microscope

See All Rhymes for microscope

Browse Nearby Words

Microscolex
microscope
microscopic
See all Nearby Words

Cite this Entry

“Microscope.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/microscope. Accessed 1 Sep. 2026.

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Kids Definition

microscope

noun
mi·​cro·​scope ˈmī-krə-ˌskōp How to pronounce microscope (audio)
1
: an optical instrument consisting of a lens or a combination of lenses for making enlarged or magnified images of minute objects
2
: an instrument using radiation other than light for making enlarged images of very small objects

Medical Definition

microscope

noun
mi·​cro·​scope ˈmī-krə-ˌskōp How to pronounce microscope (audio)
1
: an optical instrument consisting of a lens or combination of lenses for making enlarged images of minute objects
especially : compound microscope see light microscope, phase-contrast microscope, polarizing microscope, reflecting microscope, ultraviolet microscope
2
: an instrument using radiations other than light or using vibrations for making enlarged images of minute objects
an acoustic microscope
see electron microscope, scanning electron microscope, x-ray microscope

More from Merriam-Webster on microscope

Britannica.com: Encyclopedia article about microscope

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