Definition of reflectograph in US English:

reflectograph

noun

  • 1An apparatus used for reflectography. rare.

  • 2= reflectogram. rare.

  • 3An image showing the distribution of reflectance of an object at particular wavelengths; specifically = reflectogram.

Origin

Early 20th century (in an earlier sense). From reflect + -o- + -graph.

Pronunciation

reflectograph

/rɪˈflɛktəɡrɑːf/