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
Noah Haggerty, Los Angeles Times, 1 Dec. 2024
Remarkably, all of our DNA can fit inside a cell’s nucleus, which is only a few micrometers long.
—William A. Haseltine, Forbes, 1 Nov. 2024
For now, the team has only printed tiny samples with a diameter of 3 centimeters, a length of 7 centimeters and a resolution of 15 micrometers, per New Scientist.
—Margherita Bassi, Smithsonian Magazine, 19 Nov. 2024
Ultrafine particles are aerosols less than 0.1 micrometers, or 100 nanometers, in diameter — about one-thousandth the width of a human hair.
—Discover Magazine, 1 Nov. 2024
See all Example Sentences for micrometer 
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Noun
Particulate matter less than 2.5 micrometers in size, PM2.5, sits at a concentration around 40 micrograms per cubic meter in Stockton, but the 2020 August Complex fires raised that level to more than 70 for multiple days.
—Noah Haggerty, Los Angeles Times, 1 Dec. 2024
Remarkably, all of our DNA can fit inside a cell’s nucleus, which is only a few micrometers long.
—William A. Haseltine, Forbes, 1 Nov. 2024
For now, the team has only printed tiny samples with a diameter of 3 centimeters, a length of 7 centimeters and a resolution of 15 micrometers, per New Scientist.
—Margherita Bassi, Smithsonian Magazine, 19 Nov. 2024
Ultrafine particles are aerosols less than 0.1 micrometers, or 100 nanometers, in diameter — about one-thousandth the width of a human hair.
—Discover Magazine, 1 Nov. 2024
See all Example Sentences for micrometer
Dictionary Entries Near micrometer
Cite this Entry
“Micrometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/micrometer. Accessed 22 Dec. 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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