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
The team connected eight tiny (1.5 by 1.5 by 0.1 millimeters) rigid crystalline cells and encapsulated them in a polymer to make a flexible photovoltaic system.
—
IEEE Spectrum, 1 Apr. 2024
South Florida is already a low-lying place, so millimeters matter here.
—Alex Harris, Miami Herald, 29 Mar. 2024
Microplastics are fragments of plastic that are smaller than five millimeters long, the diameter of a standard pencil eraser.
—Aaron Boorstein, Smithsonian Magazine, 29 Mar. 2024
Microplastics are a bit bigger, ranging from 1 nanometer to 5 millimeters, or about the size of a pencil eraser.
—Kaitlin Sullivan, Health, 28 Mar. 2024
Dangers of tiny plastic particles Microplastics are polymer fragments that can range from less than 0.2 inch (5 millimeters) down to 1/25,000th of an inch (1 micrometer).
—Sandee Lamotte, CNN, 6 Mar. 2024
In lieu of new congressional funding, the Pentagon last week unveiled a $300 million aid package that includes Stinger antiaircraft missiles, 155 millimeter artillery rounds, 105 millimeter artillery rounds, anti-armor systems, and other munitions and equipment.
—Siobhán O'Grady, Washington Post, 20 Mar. 2024
All three had arrived at the final tee a stroke needing a birdie to make a playoff, but while reigning Open champion Harman and world No. 6 Schauffele got within a few feet of forcing Scheffler back out, Clark came within millimeters.
—Jack Bantock, CNN, 17 Mar. 2024
According to Dermatologists By Jenny McCoy Rest assured, the Swifties will not sleep until every square millimeter of this bracelet has been dissected.
—Elizabeth Logan, Glamour, 4 Mar. 2024
IEEE Spectrum, 1 Apr. 2024
South Florida is already a low-lying place, so millimeters matter here.
—Alex Harris, Miami Herald, 29 Mar. 2024
Microplastics are fragments of plastic that are smaller than five millimeters long, the diameter of a standard pencil eraser.
—Aaron Boorstein, Smithsonian Magazine, 29 Mar. 2024
Microplastics are a bit bigger, ranging from 1 nanometer to 5 millimeters, or about the size of a pencil eraser.
—Kaitlin Sullivan, Health, 28 Mar. 2024
Dangers of tiny plastic particles Microplastics are polymer fragments that can range from less than 0.2 inch (5 millimeters) down to 1/25,000th of an inch (1 micrometer).
—Sandee Lamotte, CNN, 6 Mar. 2024
In lieu of new congressional funding, the Pentagon last week unveiled a $300 million aid package that includes Stinger antiaircraft missiles, 155 millimeter artillery rounds, 105 millimeter artillery rounds, anti-armor systems, and other munitions and equipment.
—Siobhán O'Grady, Washington Post, 20 Mar. 2024
All three had arrived at the final tee a stroke needing a birdie to make a playoff, but while reigning Open champion Harman and world No. 6 Schauffele got within a few feet of forcing Scheffler back out, Clark came within millimeters.
—Jack Bantock, CNN, 17 Mar. 2024
According to Dermatologists By Jenny McCoy Rest assured, the Swifties will not sleep until every square millimeter of this bracelet has been dissected.
—Elizabeth Logan, Glamour, 4 Mar. 2024
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'millimeter.' 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 millimeter
Cite this Entry
“Millimeter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/millimeter. Accessed 18 Apr. 2024.
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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