Adjective: photometric ,fow-tu'me-trik
- Of or relating to photometry
"photometric measurements are essential in determining the brightness of celestial objects";
- photometrical
- (astronomy) relating to or involving the measurement of the brightness and colour of celestial objects to determine their physical properties or redshift (without detailed spectra)
"photometric techniques are often used for initial surveys before more detailed spectroscopic follow-up"
Encyclopedia: Photometric