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

Better forecasting of atmospheric rivers Atmospheric rivers are long, narrow corridors in the sky that transport enormous amounts of water vapor. — Yongkang Xue, The Conversation, 10 Sep. 2026

Built for polar exploration, this vessel features a cozy alpine-meets-the-sea vibe, with faux-fur pillows, plush blankets for staying warm and three fireplaces with dancing water vapor flames. — Condé Nast, Condé Nast Traveler, 9 Sep. 2026

The white plumes of gas are thought to mainly contain water vapor, carbon dioxide and sulfur dioxide, while ash and debris make up the brown clouds surrounding the plumes. — Chelsea Gohd, Space.com, 9 Sep. 2026

This internal process generates the necessary high heat and emits mostly water vapor, successfully driving the reaction forward without direct carbon emissions. — Mrigakshi Dixit, Interesting Engineering, 3 Sep. 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)