reflectometer

American

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

noun

Optics.

a device for measuring reflectance.

reflectometer British

/ ˌriːflɛkˈtɒmɪtə /

noun

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of reflectometer

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The spacecraft will use near-infrared lasers to shine light into its dark polar regions while an onboard reflectometer will measure surface texture and composition.

From Scientific American

This instrument is an improved form of the total reflectometer, in which the refractive power of a given substance is determined by the method of total reflection.

From Project Gutenberg

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023