millimeter

American  

[mil-uh-mee-ter] / ˈmɪl əˌmi tər /

especially British, millimetre

noun

1. a unit of length equal to one thousandth of a meter and equivalent to 0.03937 inch. mm

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millimeter Scientific  

/ mĭl′ə-mē′tər /

1. A unit of length in the metric system equal to 0.001 meter.

2. See Table at measurement

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Other Word Forms

• millimetric adjective

Etymology

Origin of millimeter

First recorded in 1800–10; from French millimètre; milli-, meter ¹

Example Sentences

But of course, this mission will require a steady approach and detailed calculations down to the millimeter.

From Space Scoop

Machines strip the insulation material off the copper, then use blades to chop and shred it into granules a few millimeters long, sometimes known as ‘copper chops.’

From The Wall Street Journal

In the first five days, forensic experts gingerly removed earth, millimeter by millimeter, recovering 3,463 bone fragments.

From Barron's

It’s 4 millimeters in tablet mode and just shy of 9 millimeters when doubled over in phone mode—that’s on par with most premium nonfolding smartphones.

From The Wall Street Journal

It is also larger than previous models, measuring eight millimeters in diameter and four millimeters in thickness.

From Science Daily