Relating to or characterized by acapnia; having abnormally low blood carbon dioxide levels.
From acapnia + '-al' (pertaining to). This adjectival form allows medical professionals to describe CO2 levels and related physiological states.
Airplane pilots used to worry about acapnial hypoxia—the confusion and disorientation from low CO2 levels—which contributed to some early aviation accidents before researchers understood the physiology.
Complete word intelligence in one call. Free tier — 50 lookups/day.