Definition of rheography in US English:

rheography

(also reography)

noun

Physiology Medicine
  • The measurement of blood flow, especially (more fully "impedance rheography") by using changes in the body's electrical impedance.

Origin

1950s; earliest use found in Cardiologia. From rheo- + -graphy, after German Rheographie.

Pronunciation

rheography

/rɪˈɒɡrəfi/