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

When plumes of water vapor from Saturn's moon Enceladus spew into space, that water vapor freezes and snows back onto the icy moon's surface, but those snowflakes would, according to previous theories, not have the intricate structure of snowflakes on Earth. —Keith Cooper, Space.com, 9 July 2025

Warm moist air rising in a thunderstorm updraft and the water vapor condenses. —Marshall Shepherd, Forbes.com, 2 July 2025

That's because the sweat on one's body doesn't have any place to evaporate off the skin because the air is already so full of water vapor. —Michel Martin, NPR, 20 June 2025

The name is completely accurate; somehow, D.S. & Durga managed to capture the scent of water vapor, which brings to mind theme-park vacations and concrete after rain. —Danielle Sinay, Glamour, 28 May 2025

Word History

First Known Use

15th century, in the meaning defined above

Rhymes for water vapor

• caper
• paper
• raper
• scraper
• shaper
• taper
• newspaper
• notepaper
• sandpaper
• skyscraper
• wallpaper
• wastepaper

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)