An altitude chamber is a system that simulates high-altitude environments for various purposes, such as aviation and medical research. There are several synonyms or alternative terms used to refer to altitude chamber systems. One of them is hypobaric chamber, which is a similar term that describes a low-pressure chamber that creates an environment similar to high altitudes. Another synonym is hyperbaric chamber, which is a pressurized chamber that simulates high-pressure environments, such as deep-sea diving or medical treatment. Additionally, altitude simulators, environmental test chambers, and aerospace environmental chambers are other terms that refer to altitude chambers used in the aerospace industry for testing, development, and training of pilots.