reflectometer

[ ree-flek-tom-i-ter, ri- ]
/ ˌri flɛkˈtɒm ɪ tər, rɪ- /

noun Optics.

a device for measuring reflectance.

Origin of reflectometer

First recorded in 1890–95; reflect + -o- + -meter

British Dictionary definitions for reflectometer

reflectometer
/ (ˌriːflɛkˈtɒmɪtə) /

noun

physics an instrument for measuring the ratio of the energy of a reflected wave to the incident wave in a system