aerotonometer

aer·o·ton·om·e·ter

(ār'ō-ton-om'ĕ-tĕr), 1. An instrument for estimating the tension or pressure of a gas. 2. Synonym(s): tonometer (2) [aero- + G. tonos, tension, + metron, measure]

aerotonometer

An obsolete term for a tonometer, specifically used for measuring blood gases; the prefix aero- has been dropped in the working medical parlance.