microscopic
adjective
mi·cro·scop·ic
ˌmī-krə-ˈskä-pik 
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
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
This development could pave the way for super-precise thermometers and chemical detectors that work at a microscopic level.
—
Mrigakshi Dixit, Interesting Engineering, 29 Apr. 2026
Three years later, Hendon’s team turned their attention to studying why the microscopic clumps form in the first place, particularly at very fine grind levels.
—ArsTechnica, 28 Apr. 2026
Scientists identified plant traces by sequencing microscopic DNA fragments found in dust and fibers collected from the Shroud, rather than discovering visible food remains.
—Andrea Margolis, FOXNews.com, 26 Apr. 2026
They’re regulated by the Texas Commission on Environmental Quality to ensure proper safeguards are in place to prevent microscopic cement particles from causing health problems in nearby residents.
—Harrison Mantas, Fort Worth Star-Telegram, 25 Apr. 2026
See All Example Sentences for microscopic
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Mrigakshi Dixit, Interesting Engineering, 29 Apr. 2026
Three years later, Hendon’s team turned their attention to studying why the microscopic clumps form in the first place, particularly at very fine grind levels.
—ArsTechnica, 28 Apr. 2026
Scientists identified plant traces by sequencing microscopic DNA fragments found in dust and fibers collected from the Shroud, rather than discovering visible food remains.
—Andrea Margolis, FOXNews.com, 26 Apr. 2026
They’re regulated by the Texas Commission on Environmental Quality to ensure proper safeguards are in place to prevent microscopic cement particles from causing health problems in nearby residents.
—Harrison Mantas, Fort Worth Star-Telegram, 25 Apr. 2026
See All Example Sentences for microscopic
Cite this Entry
“Microscopic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/microscopic. Accessed 1 May. 2026.
Copy CitationKids Definition
microscopic
adjective
mi·cro·scop·ic
ˌmī-krə-ˈskäp-ik
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
Medical Definition
microscopic
adjective
mi·cro·scop·ic
ˌmī-krə-ˈskäp-ik
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
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