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

The disease is contracted by breathing in water vapor, not spread from person to person, officials said. — Colin Mixson, New York Daily News, 14 Aug. 2026

Its engine’s combustion results only in water vapor, with no carbon emissions. — Marissa E. Yingling, The Conversation, 12 Aug. 2026

When the temperature falls low enough, the water vapor in the air begins to condense, forming a cloud above the smoke column. — Tiago Ventura, Time, 29 July 2026

The amount of water vapor in this air mass will reach levels well above average for even midsummer’s humid reputation. — Briana Waxman, CNN Money, 27 July 2026

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)