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
Kaja Andric, New York Times, 13 Feb. 2025
The most advanced of these are called micro-LED displays, which boast, as the name suggests, pixels on the scale of micrometers.
—Michael Irving, New Atlas, 30 Mar. 2025
The slice of rock mounted on the glass slide is only ~30 micrometers (~0.001 inches) thick.
—Erik Klemetti, Discover Magazine, 25 Mar. 2025
In their desperate meandering, some larvae—which measure 500 to 600 micrometers (0.05 to 0.06 centimeters) long—will travel several centimeters each day.
—Ars Technica, 21 Feb. 2025
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 sites hawk their wares with scientific specificity: microprinting in dots per inch, card thickness in micrometers (polycarbonate stock for that stiff, authentic feel) and various types of laminates.
—Kaja Andric, New York Times, 13 Feb. 2025
The most advanced of these are called micro-LED displays, which boast, as the name suggests, pixels on the scale of micrometers.
—Michael Irving, New Atlas, 30 Mar. 2025
The slice of rock mounted on the glass slide is only ~30 micrometers (~0.001 inches) thick.
—Erik Klemetti, Discover Magazine, 25 Mar. 2025
In their desperate meandering, some larvae—which measure 500 to 600 micrometers (0.05 to 0.06 centimeters) long—will travel several centimeters each day.
—Ars Technica, 21 Feb. 2025
See All Example Sentences for micrometer
Cite this Entry
“Micrometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/micrometer. Accessed 24 May. 2025.
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
Share