A person who studies or specializes in altitude and its effects; or relating to high altitudes and their characteristics.
From 'altitude' plus the agent suffix '-arian' (one who practices or specializes in something). A rare English term created to describe altitude specialists or enthusiasts.
This wonderfully obscure word would describe mountaineers, high-altitude physiologists, and anyone obsessed with how the human body adapts to thin air—essentially, altitude nerds.
Complete word intelligence in one call. Free tier — 50 lookups/day.