microscopic

adjective

mi·​cro·​scop·​ic ˌmī-krə-ˈskä-pik How to pronounce microscopic (audio)
variants or less commonly microscopical
1
: resembling a microscope especially in perception
2
a
: invisible or indistinguishable without the use of a microscope
b
: very small or fine or precise
3
: of, relating to, or conducted with the microscope or microscopy
microscopically adverb

Examples of microscopic in a Sentence

At this point, the embryo is a microscopic clump of only 100 cells. There is a microscopic crack in the diamond. He has a microscopic attention span. He recorded every aspect of his trip in microscopic detail. a microscopic study of plant tissues
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.
This has created a pressing need for new therapies capable of stopping these microscopic menaces from wreaking havoc. Neetika Walter, Interesting Engineering, 25 Sep. 2025 Tattoo artist Kelly Violet painted a haunting floral, while Cosmodernism did a composition inspired by microscopic chemical patterns. Paige Reddinger, Robb Report, 25 Sep. 2025 Researchers like me carefully separate out the tiny glass shards by sifting through the dirt and using a micromanipulator, a tool that can pick up and move microscopic grains. The Editors, JSTOR Daily, 25 Sep. 2025 An ion implanter paints microscopic transistors to create circuits. Paul Sutter, Space.com, 23 Sep. 2025 See All Example Sentences for microscopic

Word History

First Known Use

circa 1672, in the meaning defined at sense 1

Time Traveler
The first known use of microscopic was circa 1672

Browse Nearby Words

Cite this Entry

“Microscopic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/microscopic. Accessed 1 Oct. 2025.

Kids Definition

microscopic

adjective
mi·​cro·​scop·​ic ˌmī-krə-ˈskäp-ik How to pronounce microscopic (audio)
variants also microscopical
1
: of, relating to, or conducted with the microscope or microscopy
a microscopic examination
2
: resembling a microscope : able to see very tiny objects
some insects have microscopic vision
3
: able to be seen only through a microscope : very small
a microscopic plant
microscopically adverb

Medical Definition

microscopic

adjective
mi·​cro·​scop·​ic ˌmī-krə-ˈskäp-ik How to pronounce microscopic (audio)
variants or microscopical
1
: of, relating to, or conducted with the microscope or microscopy
2
: so small or fine as to be invisible or indistinguishable without the use of a microscope compare macroscopic, submicroscopic, ultramicroscopic sense 1
microscopically adverb

More from Merriam-Webster on microscopic

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!