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square millimeter

American  

noun

  1. a unit of area measurement equal to a square measuring one millimeter on each side. mm 2 , sq. mm


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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The cutting-edge 3-nanometer process can fit 250 million to 300 million transistors in one square millimeter of silicon.

From The Wall Street Journal Jul. 24, 2026

In fact, a projector or display with a resolution of 1920 x 1080 pixels could fit within an area of just one square millimeter.

From Science Daily Mar. 4, 2026

In the sample from the youngest donor, who died at 43, the team found roughly 42,000 immature neurons per square millimeter of brain tissue.

From Science Magazine Mar. 25, 2019

Measuring a little under 6 by 5 inches, it’s a marvel of compositional concentration, with not a square millimeter of wasted surface.

From New York Times Nov. 13, 2014

Equal to the resistance of a column of mercury one square millimeter in cross section, and 106.24 centimeters in length.

From Electricity for Boys by Zerbe, James Slough

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