Dictionary.com
Thesaurus.com

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.

On average, the gloves introduced around 2,000 false positive signals per square millimeter.

From Science Daily • Mar. 29, 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

There are around 200 million microvilli per square millimeter of small intestine, which contain brush border enzymes that complete the digestion of carbohydrates and proteins.

From Textbooks • Jun. 19, 2013

It's a purplish, mucilaginous substance produced by those tiny buds known by the name trichodesmia, 40,000 of which are needed to occupy the space of one square millimeter.

From Twenty Thousand Leagues Under the Sea by Walter, F. P.