photometry

[ foh-tom-i-tree ]

/ foʊˈtɒm ɪ tri /

noun

the measurement of the intensity of light or of relative illuminating power.

the science dealing with such measurements.

Nearby words

Origin of photometry

From the New Latin word photometria, dating back to 1815–25. See photo-, -metry

Related formspho·to·met·ric

[foh-tuh-me-trik] /ˌfoʊ təˈmɛ trɪk/, pho·to·met·ri·cal, adjectivepho·tom·e·trist, pho·to·me·tri·cian

[foh-tuh-me-trish-uh n] /ˌfoʊ tə mɛˈtrɪʃ ən/, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for photometric

The satellite-theory has derived unlooked-for support from photometric inquiries.
A Popular History of Astronomy During the Nineteenth Century|Agnes M. (Agnes Mary) Clerke
The results will be published in the form of a catalogue resembling the Photometric Catalogue given in volume xiv.
Scientific American Supplement, No. 601, July 9, 1887|Various
A photometric zone, 20° wide, has for some time been in course of observation at Potsdam by MM.
A Popular History of Astronomy During the Nineteenth Century|Agnes M. (Agnes Mary) Clerke
This fact simply emphasizes the lack of mathematical precision in photometric measurements of star light.
The Popular Science Monthly, July, 1900|Various

Frank Bailey has furnished particulars of photometric tests which he has made on new and old street lamps in the city of London.
Encyclopaedia Britannica, 11th Edition, Volume 16, Slice 6|Various

British Dictionary definitions for photometric

photometry

/ (fəʊˈtɒmɪtrɪ) /

noun

the measurement of the intensity of light

the branch of physics concerned with such measurements

Derived Formsphotometric (ˌfəʊtəˈmɛtrɪk), adjectivephotometrically, adverbphotometrist, noun

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

Science definitions for photometric

photometry

[ fō-tŏm′ĭ-trē ]

The measurement of the intensity, brightness, or other properties of light. Also called photometrics See also luminous intensity.