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
IEEE Spectrum, 15 June 2024
Dust and smoke are visible to the naked eye, but the particulates are actually so small — PM2.5 pollutants are 2.5 micrometers or smaller — that they can easily be inhaled, getting deep into lungs and bloodstream.
—Caralin Nunes, The Arizona Republic, 24 Apr. 2024
Many more came to light when the team started to make the spheres smaller, taking their size down to micrometer scale.
—Jacek Krywko, Ars Technica, 23 Apr. 2024
Particles that are less than 10 micrometers and 2.5 micrometers in diameter are called PM10 and PM2.5, respectively.
—Kristi Tanner, Detroit Free Press, 18 May 2024
See all Example Sentences for micrometer 
Noun
This beam was raster scanned across a square target area 22 micrometers on a side.
—IEEE Spectrum, 15 June 2024
Dust and smoke are visible to the naked eye, but the particulates are actually so small — PM2.5 pollutants are 2.5 micrometers or smaller — that they can easily be inhaled, getting deep into lungs and bloodstream.
—Caralin Nunes, The Arizona Republic, 24 Apr. 2024
Many more came to light when the team started to make the spheres smaller, taking their size down to micrometer scale.
—Jacek Krywko, Ars Technica, 23 Apr. 2024
Particles that are less than 10 micrometers and 2.5 micrometers in diameter are called PM10 and PM2.5, respectively.
—Kristi Tanner, Detroit Free Press, 18 May 2024
See all Example Sentences for micrometer
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'micrometer.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near micrometer
Cite this Entry
“Micrometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/micrometer. Accessed 4 Jul. 2024.
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
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