water vapor

noun

: water in a vaporous form especially when below boiling temperature and diffused (as in the atmosphere)

Examples of water vapor in a Sentence

Recent Examples on the Web

Water evaporates from the ground — including from lakes, rivers and plants — and rises into the atmosphere, forming large rivers of water vapor able to travel long distances, before cooling, condensing and eventually falling back to the ground as rain or snow. —Laura Paddison, CNN, 16 Oct. 2024

There is water in the air all around us in the form of water vapor, and the higher the amount of water vapor, the higher the humidity. —Emily Mullin, WIRED, 14 Oct. 2024

With its nine onboard instruments, Clipper will also study Europa’s otherworldly chemistry, make detailed maps of the moon’s icy, chaotic surface, search for enigmatic plumes of water vapor wafting into space and use ice-penetrating radar to look for lakes within the frozen rind. —Nadia Drake, Scientific American, 14 Oct. 2024

The plume detection, reported in a 2014 study and partially corroborated in 2016 when Hubble found additional signs of water vapor flitting above the surface, helped change that. —science.org, 19 Sep. 2024

Word History

First Known Use

15th century, in the meaning defined above

Kids Definition

water vapor

noun

: water in a gaseous form especially when below boiling temperature and spread through the atmosphere

Medical Definition

water vapor

noun

: water in a vaporous form especially when below boiling temperature and diffused (as in the atmosphere)