Illustration of micrometer
- micrometer 2
mi·crom·e·ter
mī-ˈkrä-mə-tər 
1
: an instrument used with a telescope or microscope for measuring minute distances
2
: a caliper for making precise measurements that has a spindle moved by a finely threaded screw
mi·cro·me·ter
ˈmī-krō-ˌmē-tər
: a unit of length equal to one millionth of a meter
called also micron
see Metric System TableExamples of micrometer in a Sentence
Recent Examples on the Web
Aamir Khollam,
Interesting Engineering,
3 July 2026
The joining pads must be precisely aligned to within less than a micrometer for the process to work.
—
Alex Music,
IEEE Spectrum,
25 June 2026
Previous research shows speeds reaching 120 micrometers a second.
—
Andrew Paul,
Popular Science,
11 June 2026
Aerosolized particles can range from a few nanometers to several tens of micrometers, which could make a quick squirt of deodorant or hairspray a catastrophic event.
—
Victor Tangermann,
Futurism,
10 June 2026
See All Example Sentences for micrometer
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.
Noun
The setup can scan an area measuring 200 by 200 micrometers at heights ranging from 50 to 450 micrometers above the surface.
—
Aamir Khollam,
Interesting Engineering,
3 July 2026
The joining pads must be precisely aligned to within less than a micrometer for the process to work.
—
Alex Music,
IEEE Spectrum,
25 June 2026
Previous research shows speeds reaching 120 micrometers a second.
—
Andrew Paul,
Popular Science,
11 June 2026
Aerosolized particles can range from a few nanometers to several tens of micrometers, which could make a quick squirt of deodorant or hairspray a catastrophic event.
—
Victor Tangermann,
Futurism,
10 June 2026
See All Example Sentences for micrometer
Cite this Entry
“Micrometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/micrometer. Accessed 5 Jul. 2026.
Copy CitationKids Definition
micrometer
1 of 2 noun
mi·crom·e·ter
mī-ˈkräm-ət-ər
1
: an instrument used with a telescope or microscope for measuring very small distances
micrometry
noun
-ˈkräm-ə-trē
micrometer
2 of 2 noun
mi·cro·me·ter
ˈmī-krō-ˌmēt-ər
: a unit of length equal to one millionth of a meter
Medical Definition
micrometer
1 of 2 noun
mi·crom·e·ter
mī-ˈkräm-ət-ər
: an instrument used with a telescope or microscope for measuring minute distances
Love words? Need even more definitions?
Merriam-Webster unabridged
