mic
ro
me
ter
Plural
micrometers
1
a precise handheld measuring tool typically used to measure very small distances between 0 and 25 mm
- The scientists used a micrometer to measure the diameter of individual cells under the microscope.
- The machinist carefully measured the width of each engine part with a digital micrometer to ensure it met specifications.
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2
a unit of length in the metric system equal to one millionth of a meter
- The conductive nanotubes were only a few micrometers in diameter and needed to be viewed under an electron microscope.
- Bacteria and other microorganisms range in size from 1-10 micrometers, making them too small to be seen with the naked eye.
Synonyms: