altitude chamber

noun

: a chamber having an interior that can be so controlled as to simulate the air pressure, humidity, and temperature encountered at various altitudes

… her work as a lab technician testing soldiers in an altitude chamber for mountain combat …

—Molly Miron, The Bemidji Pioneer, 10 Mar. 2010

Word History

First Known Use

1918, in the meaning defined above

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now