millimeter
noun
mil·li·me·ter
ˈmi-lə-ˌmē-tər 
variants
US millimeter
or British millimetre
: a unit of length equal to ¹/₁₀₀₀ meter see Metric System Table
Examples of millimeter in a Sentence
Recent Examples on the Web
Water is injected with a syringe one droplet at a time, ensuring that every millimeter is accounted for.
—
Uma Raja, Sun Sentinel, 14 Apr. 2025
The joint mission by Magellan and Atlantic Productions deployed two submersibles nicknamed Romeo and Juliet to map every millimeter of the wreck, including the debris field spanning some three miles.
—ArsTechnica, 10 Apr. 2025
But there are titanium skid blocks that poke out a few millimeters from the plank's surface, and these are what make contact with the track surface when a car bottoms out (and before any wear to the plank), giving off a shower of titanium sparks.
—ArsTechnica, 7 Apr. 2025
Their device, just a few millimeters long, has no wires and needs minimally invasive placement.
—Payal Dhar, Scientific American, 2 Apr. 2025
See All Example Sentences for millimeter
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Uma Raja, Sun Sentinel, 14 Apr. 2025
The joint mission by Magellan and Atlantic Productions deployed two submersibles nicknamed Romeo and Juliet to map every millimeter of the wreck, including the debris field spanning some three miles.
—ArsTechnica, 10 Apr. 2025
But there are titanium skid blocks that poke out a few millimeters from the plank's surface, and these are what make contact with the track surface when a car bottoms out (and before any wear to the plank), giving off a shower of titanium sparks.
—ArsTechnica, 7 Apr. 2025
Their device, just a few millimeters long, has no wires and needs minimally invasive placement.
—Payal Dhar, Scientific American, 2 Apr. 2025
See All Example Sentences for millimeter
Cite this Entry
“Millimeter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/millimeter. Accessed 30 Apr. 2025.
Copy CitationKids Definition
millimeter
noun
mil·li·me·ter
ˈmil-ə-ˌmēt-ər
: a measure of length equal to ¹⁄₁₀₀₀ meter see metric system table
Medical Definition
millimeter
noun
mil·li·me·ter
variants
or chiefly British millimetre
: one thousandth of a meter
—abbreviation mm
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