a unit of area measurement equal to a square measuring one kilometer on each side. Abbreviation: km2, sq. km
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use square kilometer in a sentence
To make a difference, millions of animals must roam over millions of square kilometers.
The facility features multiple types of detectors spanning more than a square kilometer of combined area both above and below ground, making it ten times larger than the previous leading instrument.The Crab Nebula’s electron launcher is so powerful, it almost shouldn’t exist | Monroe Hammond | July 9, 2021 | Popular-Science
Moreover, the ultrahigh-energy particles are rare, striking each square kilometer of Earth’s sky only about once per year.Cosmic Map of Ultrahigh-Energy Particles Points to Long-Hidden Treasures | Natalie Wolchover | April 27, 2021 | Quanta Magazine
So the researchers initially considered only areas larger than 10,000 square kilometers, roughly the size of Puerto Rico.Only 3 percent of Earth’s land hasn’t been marred by humans | Jonathan Lambert | April 15, 2021 | Science News
By October, ISIS had managed to back Azeema and Nowruz and their teammates into just a handful of square kilometers of the city.The Women Who Fought to Defend Their Homes Against ISIS | Gayle Tzemach Lemmon | February 22, 2021 | Time
At present European Russia has about 19.4 inhabitants to the square kilometer; Saxony has over 300.Woman and Socialism | August Bebel
It has two hundred and forty-seven inhabitants for each square kilometer.An African Adventure | Isaac F. Marcosson
On one square kilometer (about three-fifths of a square mile) of the battle field of Campulung 6,000 Rumanian dead were counted.