hypobaric

/ˌhaɪpoʊˈbærɪk/
adjective
  1. Relating to or having lower than normal atmospheric pressure, such as at high altitudes or in a special chamber.
    • Astronauts train in hypobaric chambers to prepare for the low pressure of space.
    • The laboratory uses a hypobaric chamber to simulate high-altitude environments.
    • Hypobaric conditions at the top of the mountain made breathing difficult.
Antonyms
What does "hypobaric" mean? | whatsthatwordmean | whatsthatwordmean