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aerosinusitis aer·o·si·nus·i·tis (âr'ō-sī'nə-sī'tĭs)
Inflammation of the paranasal sinuses caused by a difference between the pressure within the sinus cavities and the ambient pressure. Also called barosinusitis.
pain, inflammation, and possible bleeding of the membranes lining the sinus cavities in the head, caused by a difference between the pressure inside the sinuses and that outside. Sinus squeeze is a common malady of persons flying in unpressurized aircraft and of divers.