The Collaborative International Dictionary
Photometric
Photometric \Pho`to*met"ric\, Photometrical \Pho`to*met"ric*al\, a. [Cf. F. photom['e]trique.] Of or pertaining to photometry, or to a photometer.
Wiktionary
photometric
a. 1 Of or relating to photometry or to photometers. 2 (context of leaves English) Adjusting position with respect to light.
WordNet
photometric
adj. of or relating to photometry [syn: photometrical]