pneumatype

A device for determining the patency of the nasal fossae by exhaling through the nose against a plate of cooled glass. [G. pneuma, breath, + typos, type]

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pneu·ma·type (nooґmə-tīp) [pneuma- + Gr. typos type] a breath picture; a deposition of moist breath on a glass surface or mirror, used in the diagnosis of nasal obstructions.