An instrument, like the sphygmotonograph, for determining the degree of blood pressure. ... Origin: sphygmo-+ G. Tonos, tension, + metron, measure ... (05 Mar 2000) ... 
(sfig″mo-to-nom´ә-tәr) an instrument for measuring the elasticity of arterial walls.
Type: Term Pronunciation: sfig′mō-tō-nom′ĕ-tĕr Definitions: 1. An instrument, like the sphygmotonograph, for determining the degree of blood pressure.